Hair and nail follicle screening may provide a longer detection window for drug use than urine or saliva tests. These tests are noninvasive, tamper-resistant, and have a quick turnaround time. They are incredibly useful for confirming chronic or historical substance use patterns. Follicle testing is commonly used for employment screening, forensic investigations, child custody cases, and long-term monitoring.
Hair and nail follicle screening may provide a longer detection window for drug use than urine or saliva tests. These tests are noninvasive, tamper-resistant, and have a quick turnaround time. They are incredibly useful for confirming chronic or historical substance use patterns. Follicle testing is commonly used for employment screening, forensic investigations, child custody cases, and long-term monitoring.