How to get thc out of your hair
How to Get THC Out of Your Hair for Accurate Drug Testing Results
How to get THC out of your hair involves understanding hair testing detection windows and lab procedures. THC metabolites bind to hair strands and remain for months. Hair drug tests detect this reliably through accredited labs. AMH Nationwide routes samples to top national labs and reviews results by certified Medical Review Officers. Call (877) 731-6362 to schedule a collection.
How long does THC stay in your hair?
THC can be detected in hair for up to 90 days after use. Hair drug testing identifies the presence of THC metabolites that deposit in the hair shaft as it grows. The standard detection window for hair tests is approximately three months, reflecting long-term cannabis use rather than recent consumption.
Hair grows about half an inch per month. Typically, a 1.5-inch hair sample is taken to cover a 90-day period. This makes hair testing a reliable method for detecting historical THC exposure, unlike urine or saliva tests that detect recent use.
How does hair drug testing for THC work?
Hair drug testing for THC involves collecting a small sample of head hair, which is then sent to one of five national lab networks: Quest Diagnostics, LabCorp, Omega Labs, United States Drug Testing Labs, or ExperTox. AMH Nationwide coordinates the lab order and directs the requester to a collection site. There is no online ordering.
The labs use sensitive analytic methods to detect THC metabolites embedded in the hair shaft. Every non-negative screen undergoes review by a certified Medical Review Officer to ensure accuracy and compliance with federal regulations.
Can you get THC out of your hair quickly?
Removing THC from hair quickly is not scientifically supported. THC metabolites are stored inside the hair cortex, protected by the hair cuticle, and cannot be washed out or chemically removed by home remedies or commercial products.
Claims about detox shampoos or treatments lack credible evidence and do not guarantee passing a hair drug test. Hair testing is designed to detect long-term substance use, and no method reliably erases THC metabolites once incorporated into hair.
Can passive marijuana smoke cause a positive hair test?
Passive exposure to marijuana smoke is unlikely to cause a positive hair drug test. Hair tests detect metabolites formed inside the body and deposited into hair, not just external contamination.
Standard laboratory procedures include washing hair samples to remove external contaminants before analysis. Therefore, incidental exposure to smoke typically does not result in positive THC findings.
Schedule Your Hair THC Test with AMH Nationwide
To arrange hair drug testing for THC, call (877) 731-6362. AMH Nationwide will direct you to a nearby collection site and ensure your sample is processed by certified national labs with Medical Review Officer oversight.
Who orders hair drug tests for THC?
Employers, courts, probation officers, and individuals may order hair drug tests to detect THC use. Hair testing is often used for safety-sensitive positions or where a long-term drug use history is required.
AMH Nationwide provides lab ordering and collection site referrals for these tests. The labs follow strict protocols and federal guidelines, including DOT-regulated testing for safety-sensitive roles, which require urine testing under 49 CFR Part 40, whereas hair testing is for non-DOT roles.
How much does hair drug testing for THC cost?
The cost of hair drug testing for THC varies based on the testing panel and detection window required. Prices differ depending on the lab and specific services requested.
To get an accurate quote and schedule a collection, contact AMH Nationwide directly. There is no online ordering option. Call (877) 731-6362 for detailed pricing information.
Common Questions
Hair drug tests are more reliable at detecting repeated or chronic use of marijuana. A single use may not always result in detectable THC metabolites in hair, but detection is possible depending on timing and individual factors.
Hair color and type can influence drug binding, but accredited labs account for these variables. Testing protocols are standardized to provide accurate results regardless of hair characteristics.
Chemical treatments like bleaching or dyeing may reduce THC concentration in hair but do not guarantee removal. Labs consider these factors during analysis, and results remain reliable.
THC metabolites typically appear in hair approximately 5 to 10 days after use, as hair grows out from the scalp. Testing reflects past exposure, not immediate use.
DOT-regulated testing requires urine tests under 49 CFR Part 40 for safety-sensitive positions. Hair testing for THC is used for non-DOT roles or other purposes.
If a hair drug test is non-negative, a certified Medical Review Officer reviews the results to confirm accuracy and interpret findings before final reporting.
Ready to get started?
AMH Nationwide provides the lab order and arranges collection nationwide. Every non-negative result reviewed by a certified Medical Review Officer. Call (877) 731-6362 or contact us.