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For as long as you have had the hair. If you haven't had a hair cut in three months and did drugs 2 1/2 months ago, the proof will be there.
Hair drug testing is one of the important techniques to find presence of drug. Another drug testing includes blood, saliva, urine test etc
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoDepends on purpose of test, and how long hair is. Typically, about 90 days, more or less (for employment).
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How much hair do they test in a hair type drug test?
lots These tests require a sample of hair that is about 1-1 ½ inches long.
Does rogaine or any other hair growth drug show up in urine drug tests If so for how long?
No. Urine isn't drug tested for Rogaine.
How long does meth stay in your hair?
just had a drug abuse course taught by someone that actually works in the testing lab and i guess hair tests they can go back 90 days and chk your use of whatever u did in that time period. hair tests are not done as ofter as urine tests though.
How long can a drug be detected after use?
Depends on the drug in question, and what kind of test is being done. Hair tests can detect the use of some drugs for months. Urine tests are more commonly only good for days or weeks.
Can you test someone for Heroin using their hair?
Yes. Any drug can be tested using hair samples--using hair from any part of the body. Unlike urine or blood tests which look for metabolites; hair-tests can track use for many months long after the drug and all its metabolites have been eliminated from the body--this is because drugs can be tested by checking protein deposits in hair.
How long will LSD stay in your hair?
LSD is known to be very rarely checked for in any kind of drug tests ( urine, blood, or hair) and is also extremely hard to find in your system or hair.
How long does this drug stay in your hair when they do a hair sample?
Drug stay in your hair for months together.
How long does codeine stay in your system for hair test?
It will be three days or less before it is undetectable in standard drug tests.
Does hair drug test determine when a drug was used?
No, but it gives an estimate. Drug tests test the presence of substances the body makes when processing the drugs. In blood or urine tests, most of these substances don't linger very long until they dissappear completely. In hair, since these grow slowly and don't deteriorate, drugs can be found much longer after use. Specific times differ from drug to drug, but it's never safe to say that they can't find any traces of the drug by tests or searches. In most countries, the legal basis for these tests is quite strict though, so you'll porbably never really encounter one.
How long does the drug katamine remain in your system to get away from a hair drug test?
A hair test will show every drug you have used for the length of your hair.
How long does crack stay in your system if you do hair drug test?
It becomes a part of all of the hair that was in the process of growing when you were using. It becomes a part of the hair.
How long will amphetamines be detected in a hair analysis drug test?
As long as you have the hair you had when you did the speed.
