Hair Follicle Test Results Levels Chart 2025. The purpose of this scoping review is to describe the relationship between etg levels in hair and some of the most common and frequent pathological conditions and verify whether different. Hair evaluation methods are grouped into three main categories:

Frequency of cannabis use has a major impact on the levels of thc found in hair follicles. Your hair follicle, the part that’s inside your skin, has the most amount of your unique genetic code called dna.