Question

which specimen collection performs tests for substances that are sporadically released into the urine? 24 - hour urine clean catch random first void

Explanation:

A 24 - hour urine collection is used to test for substances that are sporadically released into the urine as it accumulates urine over a full day, increasing the chance of detecting such substances. A clean - catch is mainly for avoiding contamination to test for infections. A random specimen may miss sporadically released substances. First void is usually for testing substances that concentrate overnight.

Answer:

A. 24 - hour urine