Hair Testing

Hair testing offered by ADTS

Hair Testing can detect the past three months of drug use and therefore finds a drug user who has stopped for a short time to pass the urine test. There are no known methods for sample adulteration including hair washing which does not dilute the sample and because the hair collection can be directly observed, adulteration is even less likely.

Because it takes approximately a week for ingested drugs to show up in hair above the scalp, a hair test is not the best method to use to find an individual who has just started taking drugs.