Why use Hair Drug Testing rather than Urinalysis (Urine Drug Test)?
• What other drugs are available to be tested in hair drug testing analysis? • How fast does the hair on my head grow? • How long does my hair sample have to be? • What if my hair isnt long enough? • What if I would like to test for drugs back farther than 90 days? • How is hair drug testing for a longer timeframe done? • Will I be charged for the additional hair drug testing? • Can I use body hair instead of head hair for my drug test? • How should I differentiate head and body hair samples? • Can I give a mixed sample of head and body hair? • Is it possible to do two different hair drug tests with different hair length to determine the approximate length of drug use? • How sensitive are drug testing kits and what are the general drug cut off levels? • What are the average drug testing detection time periods by drug and test type? • How long does Marijuana stay in the body and is detectable a drug testing kit? • How long does Cocaine stay in the body and is detectable by a drug testin
When compared to urine drug testing, hair follicle sample testing can detect a longer period of drug use. With urine, most drugs are undetectable within few days after use, with the exception of marijuana, which may be detected for a slightly longer period of time. After that initial drug screening period of few days, a donor will test negative and slip through your screening process. With hair sample drug testing, the only time limitation for detecting drug use is imposed by the length of the donor’s hair. Each inch of hair provides a 30-day history of drug use. The standard for the industry is to test 1.5 inches, which provides a 90-day history of the donor’s drug use.
