Patient CareQuestion 18 of 100
A provider orders a 24-hour urine collection. What instruction should the medical assistant give the patient?
a.Save every specimen including the first morning void, and stop collecting 12 hours later
b.Collect only the specimens voided during daytime hours
c.Discard the first void when the collection begins, then save all urine for the next 24 hours including the final void
d.Keep the container at room temperature in a warm place to preserve the analytes
Explanation
A 24-hour collection starts with an empty bladder, so the first void is discarded and the clock begins; all urine is then saved for the full 24 hours, ending with a final void at the stop time. Saving the first void double counts urine formed before the period started. Skipping night specimens loses part of the sample, and the container is normally refrigerated or kept on ice unless a preservative dictates otherwise.
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