Quote Originally Posted by FakeBoobsRule
Blindman is close about the false positives. Drug tests are usually done in 2 stages, first immunoassay then any non negative sample goes to GC/MS. There are no false positives in GC/MS and an extremely low number of false positives in immunoassay but once it goes to GC/MS they will know 100%.

Prescriptions for opiates will not help you get out of a positive for THC.
for those that are on probation when they screw up do courts usually go into the second stage testing if they use the excuse of hemp oil being used in their foods everyday. and i know it might be answered in a previous forum but how does this gas test work. do they break down the urine sample already in hand or do you up there again for the gas test.