Hair analysis

Hair analysis is done by evaluating hair structure and DNA from cells attached to the root of the hair. It can be used to find out if people are related. Forensic hair analysis can be done to help identify a person who may have been present at a crime scene.

Hair samples that are taken close to the root can show what drugs were used up to 3 months before the test.

Hair analysis is done by collecting a hair sample and sending it to a laboratory.

Hair samples are taken from a specific part of the body, such as from the back of the scalp by the neck or from the pubic area. Hair samples are generally collected from the section of the hair closest to the skin. Hair close to the skin or scalp includes the most recent growth, which provides the most accurate information about what has occurred recently in the body.

Hair samples are washed in special chemicals before testing.

Hair samples for DNA analysis will be gathered by laboratory personnel or law enforcement officials or aforensic examiner. For DNA testing, the hair must include the root. This requires that the hair be plucked, not cut.

Hair samples that are taken close to the root can show what drugs were used up to 3 months before the test.

If you have a hair analysis done, the lab will give you specific instructions on how to prepare your hair. Hair preparation and the part of your body from which the hair is taken vary.

Hair analysis can be a useful tool, but there’s still a lot to learn about it. Because of this, you could be asked to take a different type of test so the results can be compared.

Results of drug testing will include the name of the drug and if the test is positive or negative. Negative results mean no drug was found.

Positive results are usually followed up with different tests to confirm the results of the first test.