Are Hair Drug Tests Really Efficient

When it comes to drug screening, hair is a reliable medium as it has residues that are deposited by whatever people ingest. The outside part of the hair is not coated by the residue. The substance is obtained by the root of the hair from the person's blood stream and supply it to the hair shaft's inside. The residue stays in the shaft and makes a pattern as the hair of an individual grows.

A lot of treatment centers experts say that when an individual has a long hair, he has more residues on it. In numerous instances, hair has been used by many companies to test the existence of alcohol or medications in the body of their potential staff. Medicines like heroin and cannabis will leave some particles on the hair shaft. But instead of residues on the shaft, alcohol leaves just chemical markers that indicate the use of alcohol. In this case, the amount of chemical markers or medicines that are found in the shaft has to do with how much an individual has ingested.

According to treatment centers specialists, hair tests will not identify drug abuse within the last 7 days but such hair is not totally grown yet. The hair will be measured from the scalp as the part of the hair that is very close to the scalp will provide a lot of information. When the person to be tested does not have enough hair on his scalp, the laboratory is likely to gather from other body parts. If the laboratory will not be able to have a sample of the body hair, it is likely that it will get hair follicles.

The hair testing begins by obtaining about 50 hairs and washing them to get rid of any external medicine deposits or dirt. When the hair is cleaned, this will secure it from any false positives that come from factors such as residues from second-hand smoke. In the laboratory, any melanin is stripped from the hair and the sample will be studied with the use of enzyme-linked immune sorbent assay (Elisa). When the Elisa is found positive, a second test can be conducted by some laboratories with the use of gas chromatography or mass spectrometry in order to verify the final results. With the second test, a false positive can be avoided.

There are a variety of ways that drug testing can be carried out. Hair testing can be one of the simplest ways to determine positive drug use; however, the hair should be clean so that the test will not end up with false positives.


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You can go to inpatient treatment centers in Hampton and treatment centers in Clarksville to find out more about drug abuse therapy programs


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