3 doctors weighed in:
How good has drug testing gotten for new drugs now?
3 doctors weighed in

Dr. Dan Fisher
Internal Medicine
2 doctors agree
In brief: Very
Drug testing is quite sensitive and highly specific.
Most labs run very sensitive screens to identify major classes of drugs then when they find a positive they run a highly specific gas chromatograph / mass spectrometer. This test uniquely identifies the parent compound and its metabolites. If the sample chain of custody is good, there is only one explanation for a positive result.

In brief: Very
Drug testing is quite sensitive and highly specific.
Most labs run very sensitive screens to identify major classes of drugs then when they find a positive they run a highly specific gas chromatograph / mass spectrometer. This test uniquely identifies the parent compound and its metabolites. If the sample chain of custody is good, there is only one explanation for a positive result.
Dr. Dan Fisher
Dr. Dan Fisher
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