Hair Testing
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| This non-invasive, adulterant resistant screening method provides the most extensive detection period of any type of drug screening. Hair testing provides a 90 day history for use of the five most common classes of drugs (see the chart below). |
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| While many believe this method of drug screening is highly susceptible to adulteration, the drug metabolites will actually be embedded into the follicle of the hair and cannot be masked. If a donor is bald or has very little hair, the sample can be retrieved from any part of the body. |
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| Drug |
Detection Time |
| Amphetamines (Methamphetamine and Ecstasy/MDMA) |
Up to 90 Days |
| Cannabinoids (Marijuana, THC, Hashish) |
Up to 120 Days |
| Cocaine |
Up to 90 Days |
| Opiates |
Up to 90 Days |
| Phencyclidine (PCP) |
Up to 90 Days |
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