How far back in time can passing a hair follicle drug test be used to detect drug abuse.Hair drug tests can identify prior drug use for up to three months using the usual 1.5-inch sample of hair and can see usage for up to three months. Suppose a longer strand of hair is utilised. In that case, the toxicology test findings may be used to identify drug usage that occurred far earlier in the individual’s life (in some cases, years).
What is the bare minimum length of hair required for drug testing in the hair?
A single hair will not be enough for hair drug tests, and hair gathered from a brush or another source will most likely not be adequate – the hair must be removed straight from the person’s head to be valid. Hair that is 1.5 inches long and as thick as a pencil is needed to conduct an accurate analysis of the drugs used in the sample.
In contrast to head hair drug testing, body hair drug testing can only detect a history of drug use that occurred between 30 days and a year ago. A body hair sample is usually acquired by shaving or cutting hair from various parts of the body, including the arms, chest, legs, underarms, stomach, face, and legs.
If the other ways seem a bit too harsh for you, one particular approach is to ensure that you pass the hair drug test: refraining from THC-containing goods and marijuana for 120 days or more.
Recall that a hair follicle test may identify THC in a strand of hair for up to 90 days if the hair has been exposed to light. It should be noted that this is just a broad approximation. Depending on your rate of metabolism, this may be more or less than the recommended amount. Every individual is unique, and each individual’s ability to metabolise THC differs significantly.
Furthermore, although the other techniques have proven effective for many individuals, there is no assurance that they will be effective for you. To pass a drug test, you must abstain from all drugs and allow your body to run its natural course. This is the only failsafe and 100 percent confirmed method. Of course, this is easier said for some people than done, but if it is essential for you, you can do it.