Incredible How Long Can Cannabis Be Detected In Hair 2023. The same goes for other types of drugs. Web a hair follicle drug test can determine patterns of illicit drug use or prescription medication misuse over a certain period — typically 3 months for hair samples that come from a person’s.

Web a hair follicle drug test can determine patterns of illicit drug use or prescription medication misuse over a certain period — typically 3 months for hair samples that come from a person’s. Read our marijuana rehab guide. One of the most abundant components in cannabis is a chemical substance called thc, which stands for.