Hair drug testing can provide a much longer window of detection, which is useful for highly safety-critical positions where there is zero tolerance of drug usage.[19] Even if the person being tested has a shaved head (perhaps in preparation for the test), hair can also be taken from almost any other area of the body. This includes facial hair, the underarms, arms, and legs.
It costs more than urine testing, and one must have a lab for results. Hair testing is becoming more reliable as technology advances, and there is no known way to adulterate a hair specimen in order to falsify the results of the test, despite what some retailers advertise.
Result provided by CAP accredited Laboratory 90-day detection period Resistance to evasion Non-intrusive sample collection Cost effectivenessThe test kit includ...
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