Will you cut my hair or pull it from the root for a hair drug test?
The hair collected for drug testing is cut close to the scalp or skin, not pulled from the root.
Hair drug samples may be cut from any location on your scalp, but are usually taken from the back of your head to minimize the effect on your hairstyle. Only about 120 strands of hair that are 1.5 inches, or longer, are needed to make a full 100-milligram sample.
|Free Download: An In-Depth Look at Drug Hair Testing|
To collect a sample of hair from your head, the collector will usually choose three locations near the back of your head and cut a 1-cm swatch from each location. These cuts are made as close as possible to the root, but it is not necessary to include the root of your hair in the sample. If your hair is shorter than 1.5 inches in length, for example when collected from a part of the body other than the head, the collector may need to cut additional sections to get an appropriately sized sample. Each cut is usually 1 cm or less in width, and only one layer of hair is taken so the effect on your appearance should be minimal. Think of it as when your hairdresser cuts your hair. They have to lift part of the hair to get to deeper layers underneath. The collector should take care to ensure the hair removal is not noticeable. They will not leave a bald spot or noticeable short patch.
If your hair is longer than 1.5 inches, the full length of hair is cut and packaged for delivery to the testing agency.
Written by Work Place
More Q&As from our experts
- What is an ergonomic assessment?
- What are some of the key things employers need to consider about ergonomics in the workplace?
- How is sleep apnea diagnosed?
- Drug Testing
- Confirmatory Drug Test
- 5-Panel Drug Test
- Drug Metabolites
- Drugs of Abuse Testing
- Department of Transportation
- Substance Abuse & Mental Health Services Administration
- Drug Testing
- Hazard Identification Study
- With-Cause Evaluation
Hair Follicle Drug Testing 101
7 Tricks to Limit Risk in Safety-Sensitive Workplace Positions
12 Fascinating Facts About Hair Testing
Fitness-to-Work & The Future of Drug Testing
Subscribe to the Workplace Testing Newsletter
Join thousands of employment testing and employee wellness professionals.
- Sleep Apnea in the Workplace: Your Comprehensive Guide to Proper Diagnosis
- DOT Drug & Alcohol Testing: Your Comprehensive Guide to Getting It Right the First Time
- An In-Depth Look at Drug Hair Testing
- 5 Ergonomics Concepts All Employers Should Know and Understand
- What Your Company's Drug and Alcohol Policy May Be Missing (and How to Get It Right)