Q. Is there a hair test for sleep disorders?

Doctor Answer is medically reviewed by SecondMedic medical review team.

Answered by Secondmedic Expert

Yes, a hair test can be used as an effective diagnostic tool for sleep disorders. There are various types of biological materials that can be collected to measure levels of hormones related to sleep, including hair samples. Hair analysis is a relatively non-invasive method of collecting biological material from individuals and has been successfully used in diagnosing endocrine diseases and substance abuse.

The thyroid hormone (T3) and cortisol hormone have both been linked to the regulation of circadian rhythms in our bodies, which control when we feel alert or sleepy throughout the day. By conducting a hair sample analysis on individuals with suspected sleeping disorders, it is possible to identify if there are abnormal elevations or drops in their T3 or cortisol levels that may be contributing to their difficulties with sleeping.

A study conducted by researchers from The Netherlands found that people who were suffering from insomnia had significantly lower levels of T3 than healthy individuals, indicating the usefulness of such tests for diagnosing those affected by potentially serious sleep-related issues. In addition to analyzing hormones associated with circadian rhythms, researchers have also found success using hair samples as a diagnostic tool for identifying trace amounts of drugs and alcohol which could also lead to disturbances in sleep cycles.

These findings indicate that while not recommended as an initial means of diagnosis due to its costs compared with other more affordable options like questionnaires or physical measurements through devices like actigraphs; taking into account one's current activity/lifestyle/dietary habits; a hair sample test may serve as an effective secondary step towards detecting potential causes behind severe cases of insomnia or other sleeping related issues.

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