Unlike urine tests which can only detect recent use, these hair tests can detect historic use. Head hair grows at an average of 0.
We include products we think are useful for our readers. If you buy through links on thiswe may earn a small commission. Employers, lawyers, and medical professionals are showing increased interest in hair follicle drug tests because they can determine if a person has been using illicit drugs or misusing prescription medications. In this article, we discuss how hair follicle drug tests work, how to use a home kit, and what the mean. We also cover the accuracy and cost of testing, whether people without hair can still provide a sample, and how hair follicle tests compare to traditional urine-based drug tests.
Testers can use hair follicle tests to check for a specific drug, or they can test a single hair sample for several different drugs or drug classes. Some companies require potential employees to take a drug test as part of their application process, particularly for jobs that carry a high risk of injury. Employers may also carry out random drug testing for current employees, or they may request drug tests following serious accidents or incidents.
Hair drug testing kit - includes hair envelope w/foil, security seal, & specimen bag
In the United States, drug testing laws vary from state to state. Some states prohibit employers from drug testing their employees on a random basis. In these states, an employer must provide evidence that supports their decision to test a particular employee.
Courts may require drug testing for individuals on probation or during child custody, adoption, and domestic violence cases. Prescription medications and certain foods, such as poppy seeds, may contain compounds that might lead to false positive. Hair samples undergo a two-step process to ensure accurate test .
The first step involves an enzyme-linked immunosorbent assay ELISA test, which is a rapid screening method. If the ELISA test produces a positive result for a particular substance, a technician will retest the hair sample using confirmatory chromatographic testing, such as gas chromatography-mass spectrometry GC-MSto rule out false positives.
People can order at-home hair follicle testing kits through online providers. These kits include an instruction manual and a pre-paid envelop for mailing the hair sample to the laboratory.
Hair drug test kit pdt the gold standard for hair follicle drug testing
A person can usually access their test by calling a toll-free or going online and using the unique identification that comes with the kit. A negative result means that the laboratory did not detect the presence of any drug metabolites in the hair sample, or after having a positive ELISA screening, the laboratory was unable to confirm the with GC-MS. If the hair sample is contaminated or something goes wrong during the testing, the laboratory may declare the result to be inconclusive. In these cases, a person may need to provide a new hair sample to the laboratory. Hair follicle drug tests can determine whether a person has been using certain substances within the past 3 months.
However, these tests cannot pinpoint the exact date of drug use because hair growth rates can vary widely among different people. Inresearchers at the Friends Research Institute in Baltimore, Maryland, conducted a study examining the effectiveness of hair follicle drug tests. The researchers compared self-reported drug use with hair follicle test from adults at risk for moderate drug use. In a studyresearchers compared the of hair follicle drug tests with self-reported drug use from participants.
Due to the studythe researchers concluded that hair follicle tests do not provide reliable information regarding drug use in the general population. There is a range of different home kits for hair follicle drug testing on the market.
Everything you should know about a hair follicle drug test
Some drug testing kits are available for a flat fee that includes laboratory testing and all shipping costs. For other kits, a person pays a basic price for the actual kit and an additional amount depending on which drugs the laboratory tests for. Some health insurance companies cover the cost of hair follicle drug testing for medical purposes.
Hair samples can come from the armpit or face, so people who do not have hair on their he can still take a hair follicle drug test. A person with shorter hair may need to supply more hair for the sample. Urine tests can detect more recent drug use, while hair follicle tests can identify regular, long-term drug use.
It is also easier for a person to tamper with a urine sample than it is a hair sample, which may give hair follicle tests an advantage over urine tests when a person takes the test in a laboratory setting.
Although most drug screening still involves testing urine samples, hair follicle tests can help identify individuals who participate in regular, long-term drug use. Some corporate, legal, medical, and educational institutions have turned to hair follicle drug tests as a complementary approach to traditional urine-based testing. Hair follicle testing involves an up to two-step testing process to reduce the risk of false positive. People currently taking prescription medications should share this information with their employer or test administrator.
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Medically reviewed by Stacy Sampson, D. What is it? Why is it necessary? Urine test Summary We include products we think are useful for our readers. What is a hair follicle drug test? Share on Pinterest A hair follicle drug test can detect marijuana and cocaine use.
What to know about hair follicle drug tests
What happens during the test? How to use a home test. Share on Pinterest Once a person has provided their sample, they should post the at-home hair follicle testing kit. What do the mean? How accurate is it?
Hair drug testing
What if a person has no hair on their head? Hair follicle test vs. Share on Pinterest Hair samples are less vulnerable to tampering than urine samples. International study links ultra-processed foods with IBD risk. Related Coverage.
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