In this article, we discuss how hair follicle drug tests work, how to use a home kit, and what the results 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.
What is a hair follicle drug test?
A hair follicle drug test can determine patterns of illicit drug use or prescription medication misuse over a certain period — this is typically 3 months for hair samples that come from a person’s head.
