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Cocaine Hair Test Information

An increasing number of companies are choosing hair tests over urinalysis for drug screening, based on Western Washington University. Hair tests give a drug history that dates back several months. When you could possibly mask the cocaine in your urine, you can not change the chemical composition of your hair to cover your cocaine use.

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Hair Sample
The location of sewed in hair extensions prices the hair sample utilized in a cocaine test shows differences in trace element and drug concentrations depending on the location. Whenever you go for a cocaine hair test, a lab technician will remove a piece of hair in regards to the width of a pencil. The specimen is typically obtained from the back of the scalp. First, the technician will section off a small segment of hair and gently tug to remove any dead hairs. Next, she is going to cut the hair as near the scalp as possible. Once removed, the hair is washed before it is tested.

Urine Testing
Cocaine is detectable in urine for as much as four days, but a cocaine hair test uncovers your history of use for 3 months. reports that workplace cocaine hair testing found 10 times as many users as urine testing. During the first six months of 2009, three in 1,000 applicants tested positive for cocaine using a urine test. With hair testing, the variety of applicants with positive results rose to 32 out of every 1,000.

Cocaine accumulates in the hair, explains the Department of Pediatrics at the Hospital for Sick Children in Toronto, and manifests as metabolites. Metabolites are the remaining by-products after your body processes ingested cocaine. If a cocaine hair test finds these metabolites in your hair, the test result comes up positive. The July 1992 issue of the Journal of Clinical Pharmacology notes that in case your hair is exposed to crack smoke, the hair sample may become contaminated.

Hair Pigments
A study conducted by National Institute on Drug Abuse and published within the Journal of Pharmacology and Experimental Therapeutics in May 2005 demonstrated a cocaine-melanin correlation. Melanin is a pigment that imparts color to hair and skin. Clinical studies involving humans and rats showed “findings of greater cocaine in pigmented than nonpigmented hair.” This finding makes cocaine hair testing controversial, because it has the potential to discriminate against people greater amounts of hair pigmentation.

Newborns suffer the effects of maternal cocaine use, according to the Department of Pediatrics at the Hospital for Sick Children in Toronto. An article in the 1997 issue of Biology of the Neonate explains that components of cocaine cross the placenta to the fetus. A neonatal hair test for cocaine provides information about maternal cocaine use spanning a longer period of time than a urine test can verity. Some babies wouldn’t have a sufficient amount of hair to perform a cocaine hair test.

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