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Hair Strand

Hair Drug Testing

A hair drug test is ideal for safety-critical positions and zero-tolerance environments due to the ease of collection and longer-term results. ARCpoint Labs of Columbia, SC offers hair testing for cases with judicial implications or times when you seek longer-term, extremely accurate results.

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

Hair drug test key features:

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

Hair Test Procedure

A hair drug test is actually quite simple at our many labs nationwide and requires only a small volume of hair, preferably taken from the crown of the head.

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

Scissors cutting hair
Microscope in a lab

Hair Test Detection Window

The 90 days after use drug detection window is much longer in hair drug testing than it is for some other sample types. This is due to trace amounts of drug chemicals becoming trapped inside each hair. Drugs are incorporated into the hair’s fibers from the bloodstream and remain locked in the hair as it grows.

Hair is composed of a hard protein called keratin and is tested using the same process as fingernails since they share this protein.

Schedule a hair drug test at ARCpoint Labs of Columbia, SC today.

Accurate. Reliable. Confidential Testing.