PhlebotomyQuestion 54 of 100
In the CLSI order of draw, which tube is collected immediately after blood culture bottles?
a.Lavender (EDTA) tube
b.Light blue (sodium citrate) tube
c.Gray (sodium fluoride) tube
d.Green (heparin) tube
Explanation
The light blue sodium citrate tube for coagulation studies is drawn immediately after blood cultures. Drawing it early minimizes contamination from other additives that could affect clotting results. The order then continues with serum tubes, green, lavender, and gray.
Practice all 100 questions free — no signup required.
Related questions on this topic
- According to the standard order of draw, which specimen is collected first when a blood culture is ordered along with other tests?
- A lavender-top (purple) tube is required for a complete blood count (CBC). Which additive does it contain?
- A green-top tube is used for many chemistry (plasma) tests. Which additive does it contain?
- A gray-top tube containing sodium fluoride is most appropriate for which test?
- A plain red-top tube (no additive or with clot activator only) is typically used to collect which specimen type?
- At what angle should the needle be inserted during a routine venipuncture?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against NHA Certified Patient Care Technician/Assistant (CPCT/A) Exam · How we review