How to distinguish between saliva test and urine test? When we test whether someone is damaged, or if we have recently used drugs, we should test oral fluid. Salivais part of the bloodstream, so if the drug is in the bloodstream, it affects the brain and damages the individual. In this case, we are looking for residual drugs called metabolites in the saliva.
When we are testing to test for habitual use, we should test the urine. Once the drug has left the blood, the residue needs to be excreted by the body. When testing urine, we are looking for metabolites in the urine.
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