Tag: beat a drug test

Urine testing

Add certainty with specimen validity testing

December 18, 2015 By

Quest Diagnostics offers specimen validity testing with varying levels of quality assurance to help ensure the integrity of a urine drug test.

Urine testing

How donors cheat drug tests

December 16, 2015 By

The use of oxidizing adulterants is one of the most common ways donors try to cheat a urine drug test. Our chart shows different kinds of adulterants.