Chemical and microscopic changes that invalidate a urine specimen occur if the urine is kept at room temperature for more than ____.
A) 2 minutes
B) 5 minutes
C) 20 minutes
D) 30 minutes
E) 1 hour

Question

Quizplus · Accepted Answer

Urine specimens can undergo chemical and microscopic changes if left at room temperature for more than 1 hour, leading to inaccurate test results.

Chemical and Microscopic Changes That Invalidate a Urine Specimen Occur