Hair Drug Testing

Hair analysis for accurately detecting drugs used up to 90 days before the test.

Detection of most common Drugs and Alcohol:

  • Cocaine
  • Marijuana (THC)
  • pioids and opiates, such as heroin, codeine, oxycodone, morphine, hydrocodone, and fentanyl
  • Amphetamines including methamphetamines
  • Phencyclidine (PCP)
  • Alcohol
  • Any drug can be tested by special request
Price:219 USD

Quick Test (5 days)!
Taking samples from home.
Easy and non-invasive.

Traceability service for legal drug testing.
Process with chain of custody.
100% confidential.

International service in Spanish, English and French.
Service in more than 70 countries.

What Drugs and Substances are Tested?


What we're actually testing is the residual blood in approximately 100 strands of hair that originates from the arterial supply nourishing each individual hair follicle and allowing it to grow.

As this blood diffuses, it deposits and dehydrates within each hair strand, the residual components serving as a record of which substances were in the circulatory system. Hair grows approximately ½ inch per month, so for instance, the first inch and a half of hair emerging above the scalp would retain a record of 90 days of substances in the dried residual blood in the hair shaft. Similarly, growth of fifteen centimeters above the scalp would cover drugs present over the previous 12 months.

This makes it possible, by examining hair from a segmented location, to link it to substance use during that period.

After cutting the hair, between 70 and 100 strands are needed, each about the thickness of a pencil lead, twisted and cut at the scalp line. The hair is washed to ensure no external contamination and for other reasons. Then, the length of hair from the period being analyzed is ground into small particles or powder and a weighed amount, usually between 50 and 100 mg of hair, is taken.

For example, in a 90-day test, you would use the first inch and a half of all the hair taken for that test.

Next, the hair undergoes a complex solvent extraction procedure focusing on the substances being analyzed, resulting in the extraction of those substances into a solvent solution. This solution undergoes chromatographic analysis and mass spectrometry that our physician uses to determine if the specific drugs sought were indeed present and, if so, their quantitative amount.

The process is so precise that it identifies the molecular structure to confirm that exact substance is present and quantifies its presence in terms of picograms (one trillionth of a gram) per milligram of hair analyzed. If the amount found and confirmed is below our established cutoff levels, the test for those substances is considered negative; if it is above that level, it is positive and can be quantified.