EtG Hair Test - Hair Ethyl Glucuronide Test - Hair EtG Testing
Ethyl Glucuronide (EtG) is a breakdown product unique to alcohol that accumulates in the blood as alcohol levels decline. EtG is a minor metabolite of thanol (ethyl alcohol). It is formed in vivo as a consequence of alcohol consumption. A small fraction (0.02%) of a dose of alcohol is conjugated in the liver with glucuronic acid to form ethyl glucuronide. Chemicals called fatty acid ethyl esters (FAEEs) appear in the blood within 12 to 18 hours of someone having a drink, but they are eventually stored in the hair.
EtG USES & ADVANTAGES:
Ethyl glucuronide (EtG) is a direct metabolite of ethanol alcohol. The presence of EtG in the hair, urine or blood can be used to detect recent alcohol consumption, even after the ethanol alcohol is no longer measurable.
Consequently, the presence of EtG in the hair, urine or blood is a definitive indicator that alcohol has been ingested.
Traditional laboratory practices typically measure the amount of alcohol present in the body. Depending on the amount of alcohol that has been consumed, this method usually reveals alcohol ingestion within the past few hours.
The presence of EtG in the urine, on the other hand, demonstrates that ethanol alcohol was ingested within the past:
URINE: three or four days, or roughly 80 hours after the ethanol alcohol has been metabolized by the body.
HAIR: up to 3 months (head hair) and up to 12 months (body hair).
As a result, it can be determined that a urine alcohol test employing EtG is a more accurate indicator of the recent consumption of alcohol as opposed to simply measuring for the existence of ethanol alcohol.
Hair testing is a process in which hair specimens are analyzed for illegal drugs. When a drug is ingested, it enters the blood stream and is broken down to a specific metabolite. When a hair sample is screened, both the parent drug and the metabolite are isolated. Any samples that screen as potentially positive are confirmed using state-of-the-art GC/MS (Gas Chromatography/Mass Spectrometry) technology.
In order for a hair sample to test positive, the metabolite of the drug will be detected if the donor has physically ingested the drug. Our Laboratory uses detection levels that follow government recommendations.
Why use Hair Testing?
When compared to other forms of testing (urine, blood, oral fluids), hair samples can detect a longer period of drug use. For example, urinalysis can only detect most drugs within 2-3 days of use with the exception of marijuana, which may be detected for a longer period of time. After this period, a donor will be free of the drug, test negative and slip through the screening process. This is important in pre-employment testing where most candidates are aware that a drug test might be required and can abstain accordingly. With hair samples, the only time limitation for detecting drug usage is imposed by the length of the donor’s hair. The industry standard is to test 1.5 inches of head hair for a 90 day history.
Why is hair testing the best method of detecting substance abusers?
Pros and Cons of Hair Drug Testing:
Pros: This method has the longest drug detection window. For the majority of drugs the window of use is about 90 days or more. This method is also very donor friendly. Adulteration is the hardest to do with this method. This test is also very dependable and accurate.
Cons: The biggest disadvantage to this method is that you have to have a lab run the test and obtain the results. Because of this extra step, it can take a few extra days to get your test results. Another disadvantage is that it most likely will not pick up very recent drug use. Hair test kits are also the most expensive drug test kits because of the necessity of using a lab for the testing.
Hair Testing Questions & Answers
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