One of most expensive form of drug testing is hair drug testing. It is also convenient testing process for everyone. This test can be performed at any place and impossible to adulterate the samples. Most accurate results when compared to all the forms of drug testing. Cocaine, Marijuana, Opiates, Methamphetamine, and Phencyclidine are few drugs that detected using this drug test.
Presence of drug in the specimen is found within 90 days from day of abusing. Process of performing this test is easy. Specimen of hair should be taken from the root and sent to laboratory, no embarrassing collection of samples.
If the person abused the drug before two months, also, it is detected and donors cannot do anything to avoid detection of drug abuse. This drug testing is also used in employee testing programs because of its accuracy. Non-invasive approach is one more reason to use this drug testing method in employee drug testing program.