The Hair test is performed in a UKAS 17025 Accredited laboratory and provides the most reliable and accurate form of historical drug use.
The Hair Drug Test will look for the presence of drugs and metabolites found inside the hair strand. These drugs and metabolites will be present for several months after the drug has been ingested.
When a drug is ingested, it enters a person’s blood stream. From the blood, the drug is transferred to the hair follicle, and into the hair strand.
The drug will be trapped in the hair strand. As the hair strand grows, the drug will move further away from the scalp. Eventually, it will be washed away, cut off or fall out.
There are many different drug groups that can be included in the analysis, some of these are; Amphetamine, Methamphetamines (including Ecstasy), Benzodiazepines, Cannabis, Cocaine, Methadone, Opiates, and Ketamine.
The Test can show if drugs have been taken for a period of up to 12 months, depending on the length of hair that the sample donor has available. 1cm of head hair will show approximately 1 month of use.
If no head hair is available, body hair from some areas can be used. The period shown by 1cm of body hair is approximately 2 to 3 times longer than 1cm of head hair.
The time it takes for a drug to move from the blood to the hair follicle must be taken into consideration. On average, it takes a drug 7 to 10 days for a drug to break down in the body and move into the hair strand.
Once the drug has moved from the blood into the hair strand, it can be detected in the hair test. This will be discussed with you at the time of booking your test.
The hair sample can be segmented to provide a month by month view of potential drug use. This can be used to show if someone has recently stopped taking drugs.
Other options are also available for certain circumstances such as spiking incidents. This can be discussed with a Clinical Advisor at the time of booking.
Follow the useful links below for more information about the Hair Drug Test.