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Hair Samples Are Analyzed Chemically In Hair Alcohol Testing

Hair samples are analyzed chemically to determine the usage of alcohol. Even after exposure to air, water, soil, dust and toxic environment, the hair samples can clearly determine the alcohol usage. This establishes and verifies persistent alcohol abusers. Hair alcohol test is mostly used for this purpose in the hair drug screen process.

When there is excess consumption of alcohol, the level of alcohol in the blood stream increases. Some markers which are called as fatty acid ethyl esters (FAEE’S) and ethyl glucuronide (EtG) are produced in the blood stream due to alcohol consumption.

These markers are absorbed by the hair for their growth therefore they are detected in hair drug tests. The people have other drugs consumed, but the hair testing procedure looks only for direct products of ethanol products. Main part of alcohol is absorbed as water and carbon dioxide.

SO the concentrations of these fatty acid ethyl esters which include, ethyl palmitate, ethyloleate, ethyl myristate and ethyl stearate are used as the indicators of the alcohol consumption and can be found in hair drug screen test.

Amount of alcohol found in hair are measured in nanograms where one nanogram is equal to one billionth of gram. But due to the improvisation in the modern technology, such small amounts can also be detected in hair drug test.

If a hair segment which was analyzed has an EtG value greater than 50ng, the person is considered to be an alcohol abuser. Human hair averagely grows at a rate of 1-cm per month approximately. It is because of the relatively stable binding of EtG into the hair shaft. So it is possible to detect the presence of EtG in hair accurately, even after a long period. Even if all other drug tests fail the hair testing process is going to help with identifying the abused drug accurately, not alone with alcohol.

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Hair Drug Test

A hair test is a verification that applies a small sample of hair to discover particular drugs consumed by the person being tested. Hair drug test is fairly accurate, and in addition, it can prove if the person had been having a history of long term consumption of a said drug.  While the drug is consumed, toxins arrive at the hair-root and are stored there always, so the lab can effortlessly discover, if it has been consumed.

 

Nearly all laboratories apply just 3-5 cm from the hair-root to get results. It’s the time of nearly 90 days, according to the speed of person’s hair growth. To avoid such type of test, a few people shave their hair, as the sample can’t be received from a hairless one. But if the lab can’t get the hair of necessary length it employs a suitable kind of drug test. On occasions the absence of necessary sample denotes that you have no more rights to claim for the employment found.

 

Following types of drugs can be identified in a standard hair test:

 

Cocaine (Cocaine & Benzoylecgonine), Marijuana, Opiates (Codeine, Morphine & 6-Monacteyl Morphine), Methamphetamine (Methamphetamine/Amphetamine & Ecstasy) and Phencyclidine (PCP)! These five drug classes are authorized for testing by the Federal Government.

 

Body hair can be drug tested as hair from the head. The growth rates for body are significantly slower than the hair from your head. Most body hair is put back in about one year. It is difficult to exactly symbolize the time period of an average screen with body hair so substances may possibly be identified in body hair for up to 1 year after the substance has reached the blood stream.

 

An average screen with GC/MS authorization may needs 40+ milligrams of hair or nearly 50 – 70 strands that are up to 3.9cm (or 1.5 inches) in length. The width and pigment color of various kinds of head hair (thick black vs. thinning gray) is the basis of this difference.

 

In contrast to a urinalysis drug test, cocaine, PCP, opiates, and methamphetamine have confirmed hair examination to be far more successful than urine testing in discovering low-level drug consumption over a comprehensive period of time as these are usually out of the bloodstream within 3-7 days.

 

The identification of marijuana in samples is presently less sensitive than the other drugs when in comes to identifying even lower levels of consumption; however, it is measured to be pretty identical to urinalysis in discovering marijuana consumers. The identification period for hair is restricted just by the length of the hair sample and is nearly 90 days for an average screening process.

 

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The drugs that you intake is widely distributed in the body depending on the solubility and the lipid: water co efficient partition of the drug. The distribution of the drug in the body is decided by several other factors too like the drug concentration, pharmacokinetics and the pharmacodynamics of the drug. There are certain areas of the body where there is active perfusion of the circulating system in the forward direction while passively in the reverse direction. One such area is the hair follicle. The drug that you take in gets widely distributed in the body including the hair follicles.

The hair follicle drug screening test is a long term screening procedure that can be done to detect any drug in the past 3 months. To explain hair follicle test, it is essential to understand that it can be done in the hair from any part of the body, which means that even if you shave off the hair on your head, face, pubis, and over any where in your body, the hair follicles that still remain would reveal your drug history.

This is especially true of the hair alcohol test. Suppose you consumed alcohol two months back and you have a pre employment screening the next day. Of course the alcohol would have been cleared from blood and urine but not from the hair follicles. There are even cleansing techniques like detoxification products which may sometimes fail to eliminate the alcohol.

This is the reason why hair drug screen is done as one of the reliable procedures for drug screening. But it is not as easy as the conventional urine and blood drug testing. Certain procedures are to be followed properly for getting the valid results.

The hair drug screen test requires about 150 strands of hair, cut at the scalp and must be within one and a half inch in the region of the newly formed hair. And the hair must not be obtained form the hairbrush. Then the hair specimen must be neatly put in a specimen pouch and packed in the sample bag and must be sent in the self addressed envelope to the laboratory.

The hair drug test is a non- invasive, cost effective and accurate methods that can detect the major substances of abuse namely cocaine, marijuana, opiates, methamphetamines, ecstasy, amphetamines and PCP. It is not possible to adulterate the hair follicle specimens easily.

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