Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 29

If a patient fails to discard the first specimen when collecting a timed specimen the:

A. Specimen must be recollected

B. Results will be falsely elevated

C. Results will be falsely decreased

D. Both A and B

Step 1 of 2

Timed specimen:

Specimen obtained in a particular time of a day or specific time interval is called timed specimen.

• It is also called 24 hours specimen.

• The collection of urine should be done in an empty bladder.

• For the collection of timed specimen, the patient should discard the first morning urine or else, the results will be false.

• If the timed specimen is collected without discarding first morning urine, the specimen should be recollected.

Therefore, “specimen must be recollected and results will be falsely elevated” when the patient failed to discard the first specimen (urine) when collecting a timed specimen. Hence, the correct answer is option.