English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

5 answers

By testing for the drugs at different points in the hair shaft center on a piece of hair, a rather precise approximation can then be made as to how long a particular drug has been used. Target drug or drug metabolites cannot be washed, bleached or flushed out of the hair structure because the residue is chemically and structurally stable for a long period of time. Also there is no chance of sample contamination or manipulation. A gas chromatography/mass spectrometry (GC/MS) laboratory analysis of the hair is required to accurately provide the historical use record. Generally it takes about 5 days for drugs to show up in a person's hair and will be detectable in new hair growth for up to 90 days.

2006-08-05 18:06:44 · answer #1 · answered by Deana G 5 · 1 0

Marijuana is in your urine for 30 days and Cocaine for 3, however, a hair folical test is different. It always stays in your hair until you stop using drugs and shave your head.

2006-08-05 18:03:36 · answer #2 · answered by Thewraith98 3 · 0 0

Cocaine is detectable with hair tests and is included in the standard set of substances tested for with these tests. Hair tests generally take the most recent 1.5 inches of growth and use those for testing. That provides a detection period of approximately 90 days. If an individuals hair is shorter than 1.5 inches, this detection period will be shorter.
Cannabis use is detectable with hair tests and is generally included in the standard hair test. Hair tests generally take the most recent 1.5 inches of growth and use those for testing. That provides a detection period of approximately 90 days. If an individuals hair is shorter than 1.5 inches, this detection period will be shorter.

2006-08-05 18:12:22 · answer #3 · answered by wernerslave 5 · 0 0

The thing about hair follicle tests is that it shows if you have ever done drugs in your life. They are not like a pee test, where you are safe after so many days.

2006-08-05 18:02:43 · answer #4 · answered by The Nag 5 · 0 0

I think they both stay a while.

2006-08-05 18:02:30 · answer #5 · answered by NA A 5 · 0 0

fedest.com, questions and answers