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Hair Strand in Austin, TX North

Hair Drug Testing

ARCpoint Labs of Austin, TX North offers hair testing for times, such as cases with judicial implications, when you seek longer-term, extremely accurate results. Hair collection is an easy process and the results are longer term than other drug tests, making it ideal for safety-critical positions and zero-tolerance environments.

Once drugs enter the body, they travel through the bloodstream, eventually entering the hair shaft. A pencil-sized hair strand sample can be collected to test for drug use.

Hair drug test key features:

  • Results returned within 3-5 business days
  • A hair test most accurately detects drug use within a 14 to 90-day detection window
  • Hair testing is ideal for chronic drug use
  • There are no proven ways to falsify a hair drug test

Hair Test Procedure

We perform hair drug tests at our many labs nationwide and they are actually quite simple. Each test requires only a small volume of hair preferably taken from the crown of the head.

The hair is cut as close to the scalp as possible, placed in a chemical solution to rid it of all external contaminants, liquefied and tested for the presence of drugs.


Hair Test Detection Window

Hair sample drug testing can detect drug use for up to 90 days after use, in most cases. The detection window is much longer in hair drug testing because trace amounts of drug chemicals become trapped inside each hair.

Hair is composed of a hard protein called keratin, which also makes up fingernails, making test of these two samples similar. Drugs are incorporated into the hair’s fibers from the bloodstream and remain locked in the hair as it grows.


Schedule a hair drug test at ARCpoint Labs of Austin, TX North today.

Accurate. Reliable. Confidential Testing.