What is the difference in Hair Drug Testing compared to urinalysis?

The primary differences are: wider window of detection & inability to tamper with the test. Cocaine, methamphetamine, opiates and PCP are rapidly excreted and usually undetectable in urine 72 hours after use. The detection period for hair is approximately 90 days for a standard screen. At this time there are no known adulterants for hair tests. Since hair tests analyze the drugs inside the hairshaft, external contaminants/chemicals have no effect. Additional advantages include non-intrusive collection procedures, virtual elimination of test evasion; greater accuracy through test repetition capability. Hair Testing is far more effective than urinalysis in correctly identifying drug users.



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