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A member asked:
How long is urine good for a drug test .and how do they test it?
A doctor has provided 1 answer
Drug test: Once a specimen is collected and placed in a container there is no time limit. It can be done with a rapid read cup that can be read in 5 min but these have occasional false positives and negatives. It can be further tested with gas or liquid chromatography and mass spectrometry which are mush better and are nearly never wrong
Answered 7/30/2020
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