PTCB Pharmacy Technician (PTCE) — All Questions

A prescriber writes 'QD' on an order for a once-daily medication. Why does ISMP's list of error-prone abbreviations ask that this be written out as 'daily'?

• a.QD is easily misread as QID or QOD✓
• b.QD gives no route, so the order cannot be filled
• c.QD resembles OD, the abbreviation for the right eye
• d.QD is banned only in handwriting

The letters and the period in QD are readily read as QID or as QOD, so a once-daily drug can end up given four times a day or every other day. Confusion with OD, the abbreviation for the right eye, is a genuine hazard that ISMP also lists, but it is a route error rather than the frequency error that put QD on the list. A missing route is a separate defect, and the abbreviation is discouraged in typed orders as well as handwritten ones.

An order for an oral liquid is written as '.5 mg'. How should that dose have been expressed, and why?

• a.0.50 mg, because a second decimal place records that the dose was checked
• b.500 mcg, because ISMP bars stating a dose as a fraction of a milligram
• c.0.5 mg, because a bare decimal point can be missed and read as 5 mg✓
• d.1/2 mg, because a fraction cannot be read as a whole number

A decimal point with nothing in front of it disappears on a fax, a carbon copy or a smudged page, so .5 mg is read as 5 mg — a tenfold overdose. Rewriting the dose in micrograms is the tempting alternative and is a reasonable way to avoid decimals, but the reason given is false: ISMP does not forbid sub-milligram doses, it requires the leading zero. A trailing zero such as 0.50 mg is the opposite error and is also on the do-not-use list, because a lost decimal point makes it read as 50 mg.

A handwritten hospital order reads 'MS 4 mg IV q4h PRN pain.' Why is the order returned to the prescriber before it is processed?

• a.MS is a brand abbreviation, and brands are barred from inpatient orders
• b.MS orders must also carry a concentration expressed in mg per mL
• c.MS can mean morphine sulfate or magnesium sulfate✓
• d.MS is an oral-only abbreviation

MS and MSO4 have been read as magnesium sulfate when morphine sulfate was meant, and the reverse, which is why ISMP requires the drug name to be spelled out in full. The missing concentration is a real labeling concern and is the closest call here, but a concentration would not resolve which of the two drugs was ordered — the ambiguity is in the name itself. MS is not a brand name, and it is not limited to the oral route.

A pharmacy requires an independent double check on every insulin infusion prepared in the IV room. What makes the second check 'independent'?

• a.The second person repeats the calculation aloud while the first person confirms it
• b.The second check is recorded on a separate log sheet
• c.The second check is done by staff from a different department
• d.The second person checks the work alone, without seeing the first result✓

Independence means the second person works from the original order and reaches a conclusion without being told what the first person concluded; only then can the check catch the first person's error. Reading the calculation aloud together is the tempting choice because it feels like verification, but the second person is anchored to a result already spoken and tends to confirm it. Neither the checker's department nor where the record is filed has any bearing on independence.

Concentrated potassium chloride injection has killed patients who received it undiluted. Which system change did hospitals widely adopt in response?

• a.Concentrated vials stayed in floor stock but were sealed in a red high-alert overwrap
• b.Concentrated vials were removed from floor stock in favor of premixed bags✓
• c.Nurses were required to dilute the concentrate at the bedside before every dose
• d.Only pharmacists were allowed to sign the vials out

The concentrated vials were taken off nursing units altogether and commercially premixed, ready-to-hang bags were supplied instead, because undiluted potassium chloride given by IV push causes cardiac arrest within seconds. Adding warning stickers while leaving the vials on the unit is the plausible-sounding option, and it was tried — it did not stop the deaths, because a hurried nurse still had a lethal vial within reach. Bedside dilution is exactly the step this change was designed to eliminate.

On a hospital unit a nurse asks whether an insulin pen already used for one patient may be used for a second patient if a fresh needle is attached and the pen barrel is wiped with alcohol. What is correct?

• a.Yes, provided a new needle is attached at the bedside and the pen is relabeled
• b.Yes, because the cartridge is a closed system the needle never touches
• c.No, an insulin pen is dedicated to a single patient✓
• d.Only if the pen holds a long-acting insulin rather than a rapid-acting one

Insulin pens are single-patient devices: blood and tissue can be drawn back into the cartridge during an injection, so changing the needle does not make the pen safe for anyone else. The closed-system argument is the tempting one, but backflow into the cartridge has been demonstrated, which is why the FDA and CDC warned against sharing pens even with a new needle each time. The insulin inside the pen has no bearing on the rule.

A hospital expands the traditional five rights to eight by adding right documentation, right reason and right response. What does 'right response' require?

• a.Checking whether the drug produced the effect it was given for✓
• b.Checking that the order matches the diagnosis recorded in the chart
• c.Checking that the dose was charted within the required time
• d.Checking that the patient consented before the dose

Right response closes the loop: after the dose, someone confirms that the pain score fell, the blood pressure came down or the fever broke, and that no adverse effect appeared. Matching the order to the recorded diagnosis is the close call, but that is right reason — it asks why the drug was ordered, not what it did. Charting the dose on time is right documentation, and consent is not one of the eight rights.

Two finished prescriptions sit in the will-call bin for a father and a son who share the same first and last name. Which practice best prevents handing over the wrong bag?

• a.Ask which drug the patient expects and match it to the label
• b.Sort the two bags into separate bins by middle initial
• c.Staple the two bags together and hand over both
• d.Confirm the date of birth as well as the name✓

Two identifiers are the standard: the name plus a second item such as date of birth or street address, which is what separates a father from a son with the same name. Asking which drug the patient expects sounds practical and is the closest alternative, but a family member frequently collects for both and can name either drug, so it confirms nothing about identity. Bin sorting only helps the staff find the bag, and releasing both bags at once is the wrong-patient handoff the check exists to stop.

A technician scans the barcode on the stock bottle and the dispensing system accepts it as a match for the label. Which error does that scan still leave undetected?

• a.That the bottle holds a strength other than the one the label calls for
• b.That the package size differs from the quantity dispensed
• c.That the prescription was entered under the wrong patient's name✓
• d.That the manufacturer differs from the previous fill

The barcode carries the NDC, and the NDC identifies the labeler, the product — drug, strength and dosage form — and the package size, so all of those are compared against what was entered. The NDC says nothing about who the prescription is for, so a wrong-patient data-entry error passes the scan cleanly and has to be caught by verifying identity at entry and again at the point of sale.

A wholesaler's invoice lists the NDC 0093-0058-01 in the 10-digit 4-4-2 format. To convert it to the 11-digit 5-4-2 format used on claims, where is the leading zero inserted?

• a.At the end of the package code
• b.In front of the product code, making it a five-digit segment
• c.In front of the package code, making a three-digit segment
• d.In front of the labeler code✓

A 4-4-2 number is short one digit in the labeler segment, so the zero is placed at the front of that segment and 0093-0058-01 becomes 00093-0058-01. Padding the product or package segment instead produces a number in 4-5-2 or 4-4-3 shape, which is not a valid NDC configuration and will either reject at the processor or, worse, match a different product than the one dispensed.

Which published resource names the specific drug pairs a pharmacy should display using tall man lettering?

• a.The manufacturer's package insert for each affected product
• b.The FDA Orange Book therapeutic equivalence codes
• c.The FDA Purple Book
• d.The ISMP List of Confused Drug Names✓

ISMP maintains the List of Confused Drug Names, which pairs look-alike and sound-alike products and marks the pairs for which tall man lettering such as buPROPion and busPIRone is recommended. The Orange Book rates therapeutic equivalence between generics and their reference products, and the Purple Book lists licensed biologics; neither addresses name confusion. A package insert describes one product and cannot tell you which other product it is mistaken for.

In most states a pharmacist must counsel, or offer to counsel, at the point of sale. For which of these four patients is counseling most clearly indicated?

• a.A patient refilling the same lisinopril strength he has taken for two years
• b.A neighbor collecting a housebound patient's refill
• c.A patient buying an OTC pain reliever at the register
• d.A patient starting weekly oral methotrexate for the first time✓

A first fill of weekly oral methotrexate is the clearest trigger: it is a new prescription, and taking the tablets daily instead of once a week has killed patients, so the directions themselves are the hazard being counseled on. An unchanged refill of a long-standing drug is the close call, since an offer is usually still made, but nothing about the therapy has changed. Counseling can be left for the patient when an agent collects a routine refill, and a plain over-the-counter purchase carries no counseling duty.

A manufacturer recalls a lot of tablets that assayed subpotent, and the FDA classifies it as a Class II recall. What does that classification say about the health risk?

• a.Use carries a reasonable probability of serious harm or death
• b.Use is unlikely to cause any adverse effect
• c.Use may cause temporary or medically reversible harm✓
• d.The firm removes the product voluntarily

Class II covers products whose use may cause temporary or medically reversible adverse health consequences, with only a remote probability of serious harm — a subpotent lot fits, because the patient is underdosed for a period but the consequence is generally reversible. Class III, reserved for products unlikely to cause any adverse effect such as a lot with a label typo, is the tempting near miss. Class I requires a reasonable probability of serious injury or death, and a market withdrawal is not an FDA recall class at all.

A patient who received an influenza vaccine at the pharmacy calls two days later with a large, swollen, painful arm and a fever. To which federal system should this reaction be reported?

• a.MedWatch, the FDA program for drug and device problems
• b.The Vaccine Adverse Event Reporting System✓
• c.The ISMP national medication error reporting program
• d.The CDC's National Healthcare Safety Network

Adverse events following immunization go to VAERS, the reporting system co-managed by the FDA and CDC specifically for vaccines, and reports are accepted from pharmacists, other clinicians and patients alike. MedWatch is the close call because it is the FDA's general safety-reporting program, but vaccine reactions are routed to VAERS instead. ISMP's program collects medication errors rather than reactions, and NHSN collects healthcare-associated infection data from facilities.

After correcting a dispensing error internally, a pharmacy also submits a de-identified account of it to ISMP's national medication errors reporting program. What is the purpose of that external report?

• a.To share the hazard nationally so other pharmacies can avoid it✓
• b.To satisfy a federal requirement that every dispensing error be reported
• c.To create a record the pharmacy can use if the patient later sues
• d.To shift responsibility for the error onto the manufacturer

The ISMP program is voluntary and confidential, and its value is that a hazard discovered in one pharmacy is analyzed and published so that pharmacies everywhere can change a label, a shelf or a workflow before the same error reaches their patients. The federal-requirement option is the tempting one, but no federal rule compels reporting of every dispensing error; state boards set their own, much narrower duties. The report is not built as a legal defense and does not transfer responsibility to anyone.

A hospital convenes a root cause analysis after a patient receives a tenfold insulin overdose. What distinguishes a root cause analysis from a failure mode and effects analysis?

• a.It scores each step of a process for how likely it is to fail
• b.It identifies the individual whose action caused the event
• c.It looks back at an event that already happened to find the system failures behind it✓
• d.It is conducted before a new process is put into use

A root cause analysis is retrospective: it starts from an event that already harmed someone and works backward through the process to the system weaknesses that allowed it. A failure mode and effects analysis is the mirror image in time — it is done prospectively, before or during a process change, and scores each step for how it could fail and how badly. Stopping at the individual whose hand was on the syringe is exactly what a root cause analysis is designed not to do.

During a long queue a technician knowingly skips the required barcode scan because the scanner is slow and the product looks obviously right. Under a just-culture model, how is that behavior classified and answered?

• a.Human error, met with consoling and a redesign of the scanning step
• b.Reckless behavior, met with disciplinary action up to termination
• c.A knowledge gap, met with mandatory retraining
• d.At-risk behavior, met with coaching and a fix to the workflow✓

Skipping a required step because it feels slow and the risk feels small is at-risk behavior: the technician drifted from the rule without seeing the danger, so the response is coaching plus removing what makes the shortcut attractive, such as fixing the slow scanner. Reckless behavior is the close call and is the label many people reach for, but it means consciously disregarding a substantial and unjustifiable risk — here the technician believed the risk was negligible. Human error is an unintended slip, which a deliberate choice is not, and the technician already knew the rule.

A prescriber orders 250 mg of an antibiotic every 8 hours, the pharmacy dispenses the correct 250 mg product to the floor, and the nurse gives one dose four hours late. How is this event classified?

• a.A dispensing error, because the pharmacy is accountable for timely delivery to the floor
• b.A prescribing error, because no clock time was written
• c.An administration error, because the deviation occurred when the dose was given✓
• d.A near miss, because the ordered dose still reached the patient

The order was appropriate and the pharmacy supplied the right drug and strength, so the deviation first appears at the point of administration and belongs to the nursing step of the medication-use process. Calling it a dispensing error is the tempting choice when the pharmacy delivers to the unit, but nothing about the product or the label was wrong. It is not a near miss either: a near miss is caught before it reaches the patient, and this dose reached the patient at the wrong time.

Under CDC hand-hygiene guidance, in which situation is an alcohol-based hand rub NOT an acceptable substitute for washing with soap and water?

• a.When hands are visibly soiled or the patient has C. difficile✓
• b.When gloves will be put on immediately afterward for a nonsterile task
• c.When more than one hour has elapsed since the last hand hygiene
• d.When the technician has a small cut on the hand

Alcohol rubs do not remove visible soil and do not kill Clostridioides difficile spores, so soap and water is required when hands are dirty and after contact with a patient or environment involving C. difficile. Time elapsed since the last hand hygiene does not change which product is appropriate, only whether hand hygiene is due. Gloves are worn in addition to hand hygiene, never as a reason to change the method, and a small cut is covered rather than treated with a different product.

A technician is stuck by a needle while disposing of a used syringe in the pharmacy. Under the OSHA Bloodborne Pathogens Standard, what should be done?

• a.Wash the site and report it at once for evaluation✓
• b.Squeeze the wound to express blood and apply bleach to the site
• c.Report it only if the source patient is known to be infected
• d.Recap the needle, finish the task, and report at the end of the shift

The standard requires the exposed employee to wash the site and report the incident immediately, so that a confidential post-exposure medical evaluation can begin and prophylaxis, if indicated, can start within the window in which it works. Waiting for the end of the shift closes that window, and recapping is one of the commonest ways sticks happen in the first place. Squeezing the wound or applying bleach damages tissue and is not recommended, and the source patient's status is determined by the evaluation rather than being a condition for reporting.29 CFR 1910.1030

Which practice best controls cross-contamination between products when tablets and capsules are counted in a community pharmacy?

• a.Keep one tray for penicillins and cephalosporins and clean all trays weekly
• b.Wipe the tray and spatula with 70% isopropyl alcohol between products✓
• c.Change gloves for every prescription and leave the tray as it is
• d.Pour tablets from the stock bottle straight into the vial

Dust and residue transfer from one product to the next on the counting surface, so the tray and spatula are wiped with 70% isopropyl alcohol between prescriptions — that is what protects the patient whose drug is counted next. Reserving a tray for penicillins and cephalosporins is a genuine and useful practice and is the close call here, but cleaning only once a week leaves residue from every other drug counted on the general tray in the meantime. Gloves protect the technician, not the next patient's tablets, and pouring straight from the bottle makes an accurate count impossible.

Which reference does a pharmacy use to decide whether a drug must be handled with hazardous-drug precautions?

• a.The manufacturer's stability and compatibility chart
• b.The Safety Data Sheet supplied with the product
• c.The FDA Orange Book equivalence ratings
• d.The NIOSH hazardous drug list✓

USP <800> requires each entity to build its own hazardous drug list from the NIOSH list of antineoplastic and other hazardous drugs and to keep that list current. The Safety Data Sheet is the close call, because it genuinely describes the chemical's hazards and handling, but it is written product by product by the manufacturer and is not the source that decides whether a drug belongs on the entity's hazardous list. Compatibility charts and equivalence ratings answer entirely different questions.USP <800>

A technician must count methotrexate tablets, a drug on the NIOSH hazardous drug list, for an outpatient prescription. Which handling applies?

• a.Count on the general tray, then wipe it with alcohol afterward
• b.Use a dedicated tray and chemotherapy-rated gloves✓
• c.Count inside the horizontal laminar airflow hood to trap the dust
• d.Wear a surgical mask and count at the open back counter

Non-sterile handling of a hazardous drug still needs containment: a counting tray and spatula reserved for hazardous products, chemotherapy-rated gloves, and cleaning after use, because methotrexate tablet dust contaminates the surfaces it touches. Wiping the general tray afterward is the close call, but it does nothing for the residue already carried by the tray during that count and the equipment itself is what has to be dedicated. A horizontal laminar airflow hood blows air outward across the work surface toward the operator, so it would spread the dust rather than contain it.USP <800>

A 50 mL bag of an antineoplastic drug is dropped in the pharmacy and splits open on the floor. What is the correct first response?

• a.Blot the liquid with paper towels and discard them in the regular trash
• b.Restrict access to the area and open the hazardous spill kit✓
• c.Flush the spill toward the nearest floor drain with running water
• d.Cover the spill until housekeeping arrives

A hazardous drug spill is handled with the spill kit: keep people out of the area, put on the PPE the kit contains, contain the liquid with its absorbent pads, and place everything in the kit's hazardous waste bag. Ordinary paper towels in the regular trash send chemotherapy waste into the municipal stream and expose whoever handles the bag later. Flushing to a drain contaminates the water supply, and waiting for housekeeping exposes staff who are neither trained nor equipped for a hazardous drug.USP <800>

A product's carton directs 'store in a freezer.' Under USP's standard storage definitions, which temperature range does that describe?

• a.Between -80 °C and -60 °C, the ultra-cold storage range
• b.Between -10 °C and 0 °C, just below the freezing point of water
• c.Between -25 °C and -10 °C✓
• d.Any temperature at or below 0 °C

USP's storage definitions place a freezer between -25 °C and -10 °C, which is what a carton reading 'store in a freezer' expects; a refrigerator at 2 °C to 8 °C will not hold such a product. Treating anything at or below 0 °C as a freezer is the common assumption and fails in both directions, because a household frost-free unit can cycle warmer than -10 °C while an ultra-cold freezer runs far below -25 °C. Ultra-cold storage is a separate, specifically labeled condition used for only a few products.

A Category 1 compounded sterile preparation is made in an ISO Class 5 device that sits in an unclassified segregated compounding area. Under the 2023 revision of USP <797>, what beyond-use dates may be assigned to it?

• a.30 days refrigerated once sterility testing has been completed
• b.48 hours at controlled room temperature, 14 days when refrigerated, or 45 days in a freezer
• c.4 hours from the start of compounding, whatever the storage temperature
• d.12 hours or less at controlled room temperature, or 24 hours or less refrigerated✓

A Category 1 CSP is made in an ISO Class 5 primary engineering control that is not surrounded by a cleanroom suite, so USP <797> caps its beyond-use date at 12 hours at controlled room temperature or 24 hours refrigerated. The 48-hour, 14-day and 45-day set is the most tempting wrong answer because those were the low-risk figures in the earlier version of the chapter, which the risk-level system no longer uses. Dating measured in days or weeks belongs to Category 2 and Category 3 preparations, which require a classified cleanroom suite and, for the longest dates, sterility testing.USP <797>

A single-dose antibiotic syringe is prepared at the bedside as an immediate-use CSP. Under the 2023 revision of USP <797>, when must administration begin?

• a.Within 12 hours if the syringe is kept at controlled room temperature
• b.Within 4 hours of the start of preparation✓
• c.Within 24 hours if the syringe is refrigerated right away
• d.Within 1 hour of preparation

Immediate-use compounding is a limited exemption for urgent single-patient doses prepared outside an ISO Class 5 environment, and the 2023 revision of USP <797> requires administration to begin within 4 hours of the start of preparation. The 1-hour answer is the closest trap because that was the limit in the previous version of the chapter, and many older references still print it. Refrigeration does not extend an immediate-use preparation at all; anything needing longer storage must be compounded as a Category 1, 2 or 3 CSP.USP <797>

A technician compounds an oral suspension from crushed tablets in a water-containing vehicle, and no stability information exists for the formulation. What default beyond-use date does USP <795> allow?

• a.14 days, refrigerated✓
• b.30 days at room temperature in a tight container
• c.180 days at controlled room temperature
• d.6 months, or 25% of the time remaining on the shortest-dated ingredient

A water-containing oral preparation compounded without supporting stability data gets a default beyond-use date of 14 days under USP <795>, and it has to be refrigerated, because water is what allows microbial growth. The 180-day figure is the tempting wrong answer: that is the default for a nonaqueous preparation, and the presence of water in this suspension is exactly what disqualifies it. The manufacturer's expiration date on the tablets never carries over to a compounded preparation.USP <795>

During the compounding of a Category 2 CSP, where must ISO Class 5 air quality be maintained?

• a.In the ante-room where hand hygiene and garbing take place
• b.In the pass-through chamber that connects the ante-room to the buffer room
• c.Throughout the entire buffer room, including its floor and walls
• d.In the direct compounding area inside the primary engineering control✓

ISO Class 5 is the air quality required inside the primary engineering control — the laminar airflow workbench, biological safety cabinet or isolator — because that is where critical sites such as vial septa and needle hubs are exposed. The buffer room is the closest wrong answer: it must be ISO Class 7, one class less clean, since people and carts move through it. Ante-rooms for nonhazardous compounding are ISO Class 8, and a pass-through is a transfer device, not a compounding space.USP <797>

A technician snaps open a glass ampule inside the ISO Class 5 hood. How should the drug be moved from the ampule into the final container?

• a.Withdraw it through a 5-micron filter needle, then change the needle to inject✓
• b.Withdraw it with a regular needle and inject through a 0.22-micron sterilizing filter
• c.Withdraw it with a 5-micron filter needle and inject the dose through that needle
• d.Withdraw it with a regular needle and add a vent to equalize the pressure

Snapping an ampule showers glass fragments into the solution, so the contents are drawn up through a 5-micron filter needle or filter straw that traps the glass, and that filter is then swapped for a plain needle before the dose is injected. Injecting through the same filter needle is the closest wrong answer and a common shortcut, but it pushes the trapped glass straight into the bag. An ampule has no vacuum to equalize, so venting is pointless, and a 0.22-micron filter is a sterilizing filter rather than the particulate device intended for ampule withdrawal.USP <797>

A technician applies sterile 70% isopropyl alcohol to gloved hands and immediately reaches into the hood. What is wrong with this practice?

• a.The alcohol must be allowed to dry, because the contact time is what kills organisms✓
• b.The alcohol must be wiped off with a low-lint wipe before sterile supplies are touched
• c.Sterile water for irrigation should be used on gloves instead of alcohol
• d.Gloved hands are sanitized only when re-entering the buffer room

Alcohol only kills microorganisms while it is wet and in contact with the surface, so gloves must be allowed to air dry before compounding continues. Wiping the alcohol off is the tempting alternative, because wiping is correct for spills and for drying a work surface, but here it removes the alcohol before it has had the contact time it needs. Sterile 70% isopropyl alcohol, not sterile water, is the required agent, and gloves are sanitized frequently throughout compounding rather than only on re-entry.USP <797>

How should the work surface of a horizontal laminar airflow workbench be wiped down before compounding begins?

• a.From the top of the sash downward, finishing at the grille at the front of the deck
• b.Starting at the front opening and wiping backward to the face of the HEPA filter
• c.In circles from the center of the deck outward to all four edges
• d.In overlapping strokes, from the HEPA filter outward toward the front✓

In a horizontal workbench the HEPA filter is at the back and clean air flows toward the operator, so cleaning starts at the cleanest surface nearest the filter and moves outward, using overlapping strokes so no area is skipped. Wiping from the front toward the filter is the tempting mirror image and is exactly wrong: it drags contamination from the dirtiest edge back toward the critical area. Circular strokes leave untouched gaps between the circles, and a downward sash-to-grille pattern describes a vertical-flow biological safety cabinet, not this hood.

A case of IV bags arrives in a corrugated shipping carton. How should the bags enter the buffer room?

• a.Unpacked in the ante-room and wiped down with sterile 70% IPA✓
• b.Opened inside the hood so the contents meet only ISO Class 5 air first
• c.Carried in inside the sealed carton so the bags are never touched
• d.Sprayed with a germicidal detergent while still in the carton, then shelved

Corrugated cardboard sheds fibers and cannot be disinfected, so shipping cartons are opened outside the classified area and each item is wiped with sterile 70% isopropyl alcohol as it is transferred in through the pass-through. Carrying the sealed carton in is the tempting answer because the bags themselves stay untouched, but the carton is the contamination source. Opening a shipping carton inside the primary engineering control puts particles directly into the ISO Class 5 air, and spraying the outside of cardboard disinfects nothing.USP <797>

A compounding technician reports for a shift with an oozing rash on one forearm. Under USP <797>, what does this mean for that shift?

• a.The technician must stay out of the compounding areas until it resolves✓
• b.The technician may compound if the forearm is covered by the gown and double gloves
• c.The technician may compound after covering the rash with an occlusive dressing
• d.The technician may compound Category 1 preparations but not Category 2 CSPs

USP <797> excludes personnel with conditions that increase shedding — weeping sores, rashes, sunburn, conjunctivitis and active respiratory infections — from the compounding areas until the condition resolves, because garb reduces shedding but does not stop it. Covering the arm with the gown and a second pair of gloves is the tempting answer since the site would not be visible, but skin scales and organisms still escape at the cuffs and neckline. The exclusion is not graded by CSP category; it applies to all sterile compounding.USP <797>

A compounder leaves the buffer room for a break and removes the gown. Under USP <797>, what may be re-donned when the compounder returns during the same shift?

• a.Nothing; every item of garb must be replaced after any exit from the buffer room
• b.The gown, the hair cover and the face mask, but not the gloves
• c.The gown, if it is not visibly soiled and was left in the ante-room✓
• d.The gown and the gloves, if neither is soiled or torn

USP <797> permits the gown alone to be re-donned during the same work shift, provided it is not visibly soiled and has been stored inside the ante-room where it cannot be contaminated. Reusing the hair cover and mask along with it is the closest wrong answer, and it is what many people assume, but all garb other than the gown must be replaced with new items. Gloves are single-use without exception and are followed by a fresh application of sterile 70% isopropyl alcohol.USP <797>

Which requirement applies to the gloves worn while compounding an antineoplastic hazardous drug?

• a.A single pair of nitrile examination gloves is enough inside a closed-system isolator
• b.Sterile latex gloves changed each time a new vial is entered
• c.Powder-free vinyl gloves changed at the end of each batch
• d.Gloves meeting ASTM D6978, changed every 30 minutes✓

USP <800> requires chemotherapy gloves that have been tested for permeation by chemotherapy drugs under ASTM D6978, worn as two pairs and changed every 30 minutes unless the manufacturer documents a longer use time, and immediately if torn or contaminated. Relying on one pair inside an isolator is the closest wrong answer, because the containment device protects the room but not the hands that reach into it. Vinyl offers poor chemical resistance, and sterility, while needed for asepsis, is not what makes a glove a chemotherapy glove.USP <800>

How often must the disposable gown worn for hazardous-drug compounding be changed when the manufacturer provides no permeation information?

• a.Every 12 hours, matching the beyond-use date of the preparations
• b.Every 30 minutes, on the same schedule as chemotherapy gloves
• c.Once per shift, unless it becomes visibly contaminated
• d.Every 2 to 3 hours, and immediately after a spill or splash✓

USP <800> sets a default gown change of every 2 to 3 hours when no permeation data are available, and any splash or spill means the gown comes off at once. The 30-minute answer is tempting because it is the correct interval for chemotherapy gloves, but gloves are thinner, handle the drug directly and are therefore changed far more often than the gown. Waiting for visible contamination is unsafe, since hazardous-drug residue is usually invisible.USP <800>

What conditions does USP <800> require for the containment secondary engineering control in which antineoplastic drugs are compounded?

• a.Neutral pressure, with the exhaust recirculated through a HEPA filter
• b.Positive pressure of 0.02 inches of water column toward the ante-room, with 30 air changes per hour
• c.Negative pressure of 0.2 inches of water column with at least 6 air changes per hour
• d.Negative pressure of 0.01 to 0.03 inches of water column and at least 12 air changes per hour✓

The containment room is held at negative pressure of 0.01 to 0.03 inches of water column relative to adjacent spaces, with at least 12 air changes per hour, so that drug-contaminated air is pulled inward and exhausted rather than escaping to the rest of the pharmacy. Positive pressure with 30 air changes describes a nonhazardous ISO Class 7 buffer room, which is the closest wrong answer and the reason candidates mix the two up: protecting the product calls for positive pressure, protecting the personnel calls for negative. Recirculating hazardous-drug exhaust is not permitted; it must be vented externally.USP <800>

A 250 mL bag of an antineoplastic solution splits and spills on the pharmacy floor. What must happen first?

• a.Absorbent pads from the spill kit are laid over the spill from the outside inward
• b.Housekeeping is called to mop the floor with a germicidal detergent
• c.The area is restricted and the responder dons the spill-kit PPE✓
• d.The spill is wiped up with sterile 70% alcohol and low-lint wipes

Containment begins by keeping people away and protecting the responder: the chemotherapy spill kit supplies two pairs of chemotherapy gloves, a gown, eye protection, shoe covers and a NIOSH-approved respirator, and these go on before anything is touched. Laying absorbent pads from the outside inward is the correct next step and is the tempting answer, but doing it unprotected exposes the responder's skin and airway to the drug. Alcohol does not deactivate a hazardous drug, and mopping spreads the contamination across the floor.USP <800>

An emptied cyclophosphamide vial and the gown, gloves and wipes used to compound the dose are ready for disposal. Where do they belong?

• a.In regular pharmacy trash, because the vial is empty
• b.In a black container for RCRA hazardous waste
• c.In a red biohazard sharps container
• d.In a yellow chemotherapy waste container✓

Trace-contaminated hazardous-drug waste — an emptied vial plus the gown, gloves and wipes used with it — goes into the yellow chemotherapy waste stream for incineration. The black container is the closest wrong answer and is reserved for bulk hazardous waste, such as a partially used vial or a drug listed as hazardous waste by the EPA under RCRA. Red biohazard containers are for bloodborne-pathogen waste, and nothing that contacted an antineoplastic drug may go in the ordinary trash.USP <800>

A technician has just drawn a dose from a vial and is holding the used needle and syringe. What is the correct handling?

• a.Recap the needle with both hands before placing it in the sharps container
• b.Drop the assembly uncapped into the sharps container✓
• c.Recap using the one-handed scoop technique, then discard the assembly
• d.Break the needle off the hub and discard the syringe in the trash

OSHA's bloodborne pathogens standard requires contaminated sharps to be discarded immediately into a closable, puncture-resistant, leak-proof container that is labeled or color-coded, without recapping. The one-handed scoop is the closest wrong answer because it is a genuine technique, but it is permitted only when a specific medical procedure makes recapping unavoidable and no mechanical device is available — routine disposal is not that situation. Shearing or breaking a needle is expressly prohibited, and the container is replaced at its fill line rather than being pushed down.29 CFR 1910.1030

Which device does CDC recommend for monitoring the temperature of a pharmacy's vaccine refrigerator?

• a.A digital minimum/maximum thermometer that reads the air in the unit
• b.An alcohol or bimetal-stem thermometer on the middle shelf
• c.An infrared thermometer aimed at the vaccine cartons twice a day
• d.A digital data logger with a buffered probe✓

CDC recommends a digital data logger whose probe sits in a buffered material such as glycol, sand or glass beads, because the buffer responds like a vial of vaccine instead of like the air, and the logger records a continuous history rather than a single reading. An air-reading minimum/maximum digital thermometer is the closest wrong answer: it does capture the extremes, but the swings it reports every time the door opens are not the temperature the vaccine actually experienced. Bimetal-stem, alcohol and infrared devices are not accurate or continuous enough for vaccine storage.

A pharmacy stocks heparin 1,000 units/mL vials and heparin 10,000 units/mL vials. Which storage practice most reduces the chance that the wrong concentration is drawn up?

• a.Separate the two concentrations and highlight the strength on each bin✓
• b.Store both strengths in one bin and rely on the barcode scan at the point of fill
• c.Shelve them side by side in strength order so that the difference is visible
• d.Stock only 10,000 units/mL vials and dilute at the point of use

Heparin errors are classically wrong-concentration errors between vials that look nearly identical, so the two strengths are physically separated and the differing part of the strength is made to stand out on the bin label and on the vial. Shelving them side by side in strength order is the tempting answer because it feels orderly, but adjacency is precisely what lets a hand reaching by habit land on the wrong vial. Barcode scanning is a strong second control and should also be in place, yet it verifies after selection and cannot substitute for separation; keeping only the concentrated vial adds a dilution step and makes a large overdose easier.

What makes the verification of a compounded dose an independent double check?

• a.A second person confirms that the first person's calculation and selection were right
• b.A second person verifies the drug, concentration and calculation without seeing the first person's work✓
• c.The pharmacist checks the finished syringe against the label before release
• d.The same person repeats the calculation after a break and signs the label twice

In an independent double check the second practitioner works from the original order and reaches a conclusion before ever seeing what the first person did, and only then are the two results compared. Confirming someone else's arithmetic is the tempting answer because it is what most people actually do, but seeing the first result anchors the checker and lets the same error pass twice. One person checking their own work cannot be independent no matter how long the pause, and the pharmacist's final verification, while required, is a single check on its own.

Before the gown is donned in the ante-room, how does USP <797> require hand hygiene to be performed?

• a.Wash to the wrist with an antimicrobial soap for at least 15 seconds
• b.Rub the hands with an alcohol-based hand rub for at least 30 seconds and let them dry
• c.Scrub hands and forearms with a sterile brush and a povidone-iodine surgical scrub
• d.Wash hands and forearms to the elbow with soap and water for at least 30 seconds✓

USP <797> requires washing the hands and forearms up to the elbows with soap and water for at least 30 seconds, followed by drying with a low-lint towel, before the gown goes on; the sterile alcohol-based hand rub comes later, applied to clean dry hands just before sterile gloves. The alcohol rub is the tempting answer because it is the right agent at the wrong step — it disinfects but does not remove the soil, skin scales and debris that washing physically removes. A brush-and-iodine surgical scrub is an operating-room practice, and washing only to the wrist leaves the forearms that will be inside the gown sleeves untouched.USP <797>

A hospital pharmacy and therapeutics committee has approved a therapeutic interchange protocol for proton pump inhibitors. What does that protocol permit?

• a.Dispensing a different drug in the same class under the approved protocol✓
• b.Dispensing the same drug from a different manufacturer at the same strength
• c.Dispensing a different drug in the same class whenever the ordered one is unavailable
• d.Dispensing an AB-rated generic of the drug the prescriber ordered

Therapeutic interchange substitutes a chemically different drug expected to give a comparable outcome — one proton pump inhibitor for another at the protocol's equivalent dose — under authority the prescribers granted in advance through the approved protocol. Making the swap because the ordered product is unavailable is the closest wrong answer: a shortage may trigger the conversation, but the authority comes from the protocol, not from the stock situation, and without a protocol the prescriber must approve each change. Dispensing an AB-rated generic or the same molecule from another manufacturer is generic substitution, which involves the identical active ingredient.

A patient cannot swallow a delayed-release capsule that contains enteric-coated pellets, and the product labeling addresses this situation. What does such labeling typically direct?

• a.Crush the pellets with the capsule shell and mix the powder into applesauce
• b.Dissolve the whole capsule in warm water until the shell breaks apart
• c.Chew the pellets thoroughly so the coating breaks before swallowing
• d.Sprinkle the intact pellets on applesauce, swallowed whole✓

In this dosage form the protection is on each individual pellet, not on the capsule shell, so the labeling allows the shell to be opened and the pellets sprinkled on a spoonful of soft food and swallowed without chewing. Crushing is the tempting answer because it also gets the drug out of the capsule, but it destroys the enteric coating and dumps the whole dose into the stomach, where acid degrades the drug and can cause irritation. Chewing does the same damage, and soaking the capsule in warm water is not a labeled administration method.

A prescription is filled for regular insulin U-500. Which statement about this product is correct?

• a.It is diluted by the pharmacy to U-100 before being dispensed
• b.It is a long-acting analog that may not be mixed with other insulins
• c.It contains five times as much insulin per mL as a U-100 product✓
• d.It contains 500 units in the vial rather than 100 units

The 'U' number always states units per milliliter, so U-500 regular insulin holds 500 units/mL — five times the concentration of U-100 — which is why it is a high-alert product dispensed with its own dedicated U-500 syringe or pen so units are never misread as volume. The idea that the number describes the total content of the vial is the classic misconception and the most tempting wrong answer. U-500 is regular human insulin, short-acting rather than a long-acting analog, and it is dispensed as supplied rather than diluted by the pharmacy.

A patient who regularly fills sildenafil brings in a new prescription for sublingual nitroglycerin, and the system fires an interaction alert. Why does this combination matter?

• a.Together they can cause severe, life-threatening hypotension✓
• b.Nitroglycerin blocks the enzyme that clears sildenafil, causing priapism
• c.Together they raise blood pressure enough to trigger a hypertensive emergency
• d.Sildenafil makes nitroglycerin lose potency in the bottle

Both drugs act on the same nitric-oxide pathway and amplify vasodilation, so a nitrate taken by someone who has recently used a PDE-5 inhibitor can drop blood pressure catastrophically; this is a contraindication rather than a caution, and the alert belongs in front of the pharmacist before the prescription goes out. The hypertensive-emergency answer inverts the mechanism, since both agents lower blood pressure rather than raise it. Sildenafil does not degrade nitroglycerin tablets, and priapism with PDE-5 inhibitors is not produced by nitrate-induced enzyme blockade.

A lyophilized vaccine is supplied with a separate diluent. How should that diluent be handled in the pharmacy?

• a.Store it in the refrigerator door so it cannot freeze at the back wall
• b.Use any manufacturer's sterile water, since vaccine diluents are interchangeable
• c.Store it at room temperature or refrigerated, and keep it out of the freezer✓
• d.Store it in the freezer with the lyophilized vaccine it belongs to

Diluents are stored as their own labeling directs — at room temperature or refrigerated — and must never be frozen, because freezing can crack the vial and damage the stabilizers the diluent carries. Freezing it alongside the vaccine is the tempting answer, since some lyophilized vaccines are themselves stored frozen, but only the vaccine goes into the freezer. Each diluent is formulated for its specific vaccine and may not be swapped for another product or for plain sterile water, and the refrigerator door is not an acceptable storage location for any vaccine component.