Hair follicle drug testing is one of the most trusted methods in use today, utilized by law enforcement and judicial agencies alike. Perhaps its greatest advantage over urine and saliva testing is that it can detect drug use in an up to 90 day window prior to testing.
But it is also more sensitive that other methods, detecting drug presence at lower levels and with greater accuracy. It is highly tamper resistance: contaminants like bleach, shampoos and dyes wont affect the results.
Hair drug testing is excellent for collection in circumstances where urine collection is impractical. It is administered directly by the collector, reducing the possibility of tampering. Hair follicle drug testing requires no adulterant preparation or sanitary supplies.
Because of the long 90 day window, surprise testing is unnecessary. And for periodic testing, repeat tests are reduced to every 3 months.
Hair drug testing kits come with all collection and shipping supplies and include prepaid overnight shipping and laboratory analysis. Products are available for both abused drugs and an abused/prescription drug combination.