12-Month Hair Drug Test (One-Year Look-Back)
12-Month Hair Drug Test for Accurate One-Year Drug History
The 12-month hair drug test provides a thorough one-year look back at drug use by analyzing four consecutive 90-day hair segments. This test is ideal for employers and legal entities requiring extended drug detection. Collection is coordinated through national labs. Call (877) 731-6362 to arrange your test.
What is a 12-Month Hair Drug Test?
A 12-month hair drug test, also known as a one year hair drug test or 12 month hair follicle test, analyzes hair samples to detect drug use over the past year. The test examines four 90-day segments of hair to provide a detailed timeline of drug exposure. This method is used when long-term drug history is required beyond standard 90-day tests.
How is the 12-Month Hair Drug Test Collected and Processed?
The 12-month hair drug test requires a hair sample collected from the individual at an authorized collection site. AMH Nationwide directs the requester to one of five national lab networks: Quest Diagnostics, LabCorp, Omega Labs, United States Drug Testing Labs, or ExperTox. The hair sample is segmented into four 90-day periods for analysis.
Once collected, the sample undergoes laboratory testing for specific drugs. Any non-negative result is reviewed by a certified Medical Review Officer as part of standard processing to ensure accuracy and proper interpretation.
Who Typically Orders a One Year Look Back Hair Test?
The 12-month hair drug test is commonly ordered by employers, legal professionals, and government agencies requiring extended drug use history. It is suitable for safety-sensitive roles not regulated by DOT, as DOT requires federally certified urine testing under 49 CFR Part 40. This test provides a detailed drug use timeline over the past year.
What Drugs Can the 12 Month Hair Follicle Test Detect?
The 12-month hair drug test can detect a range of substances including marijuana, cocaine, opiates, amphetamines, and phencyclidine (PCP). Testing panels vary depending on the requester’s requirements. Detection windows extend up to one year by segmenting hair samples into four 90-day intervals.
Schedule Your 12-Month Hair Drug Test Today
To arrange a 12-month hair drug test, contact AMH Nationwide to locate a collection site within your area. Call (877) 731-6362 for assistance.
How Long Does the 12-Month Hair Drug Test Take and What Does it Cost?
Testing turnaround time typically ranges from a few days to one week depending on the laboratory and panel complexity. Pricing varies based on the specific drug panel and detection window requested. For a 12-month hair drug test, costs can be significant due to the extended analysis period. Call (877) 731-6362 for a detailed quote.
What Are the Limitations of the One Year Look Back Hair Test?
While the 12-month hair drug test offers extended detection, it may not detect very recent drug use within the past week due to hair growth rates. Hair treatments or damage can affect sample quality. This test is not acceptable for DOT-regulated testing which requires urine tests under federal protocols.
Common Questions
No, the 12-month hair drug test typically cannot detect drug use within the past 7 days because hair must grow out to capture drug metabolites. It provides a detailed history over the prior 12 months instead.
No, DOT-regulated testing requires urine specimens collected under federal protocols (49 CFR Part 40). Hair tests, including the 12-month hair drug test, are for non-DOT roles.
The collected hair sample is divided into four segments, each representing approximately 90 days of growth, allowing for a one-year drug use timeline.
Any non-negative or positive screen is reviewed by a certified Medical Review Officer who assesses the result before final reporting.
The test panel can include common drugs such as marijuana, cocaine, opiates, amphetamines, and PCP. Specific panels vary, so confirm with AMH Nationwide.
AMH Nationwide does not provide online ordering. To schedule, call (877) 731-6362 to be directed to a collection site through our national lab partners.
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.