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<dd>Employee drug testing of the hair is the only drug test method that provides a detection window of up to 90 days. It is more expensive than urine drug testing and cannot detect recent drug use within 7 days, but because specimen collection is observed, there is little chance of adulteration. Collection, storage and shipping are simple, as specimens do not deteriorate.</dd>
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<p>Hair drug testing is handled by a certified technician as part of our <a title="Hair drug testing services available here." href="https://drugtestingace.com/mobile-onsite-offsite-alcohol-drug-testing-screening-services/">Mobil, Onsite, and Offsite Testing Services.</a></p>

