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Home › Services › Hair Follicle Drug Testing
Modern diagnostic laboratory serving Fresno and the Central Valley
Extended detection · Employers, courts & individuals

Hair follicle drug testing — a 90-day window that holds up.

When a urine test's few-day window isn't enough, hair follicle testing shows a pattern of use going back about 90 days. It's harder to beat, lab-confirmed, and widely used for employment, court and custody matters — and we collect it under full chain-of-custody.

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Why choose a hair test

A standard urine test only detects recent use. Hair testing looks at drugs incorporated into the hair shaft as it grows, giving roughly a 90-day history from a small sample taken close to the scalp. Because it's difficult to adulterate and reflects a longer period, employers and courts often specifically request it when they want a fuller picture.

What hair testing is used for

  • Employment — especially safety-sensitive roles and companies wanting a stricter standard
  • Family court & custody — demonstrating sustained sobriety over months (see custody testing)
  • Probation & legal cases — when the court wants a longer look-back
  • Personal peace of mind — proving a clean history to a family member or program
Note on detection: hair testing generally reflects roughly the last 90 days and typically doesn't detect use in the most recent few days (it takes time for hair to grow out). If you need a very recent snapshot, a urine or oral-fluid test may be the better fit — we'll advise you.

Panels & what's detected

Hair panels commonly cover marijuana, cocaine, opioids, amphetamines/methamphetamine, and PCP, with expanded panels available for benzodiazepines, barbiturates and more. Every sample is analyzed by a certified laboratory and confirmed, so results are defensible if challenged.

Discreet, professional collection

Collection is quick and done under chain-of-custody with photo ID. A small amount of hair is taken close to the scalp; body hair can be used if head hair isn't available. Results are released only to you or the parties you authorize.

Answers

Frequently asked — Hair Follicle Drug Testing

How far back does a hair follicle test detect drug use?

About 90 days for a standard head-hair sample. It reflects a pattern of use over months rather than a single recent event.

How much does a hair follicle test cost?

Hair testing starts around $115 and varies by panel size. We'll confirm the exact price and turnaround before collection.

Can hair tests be used for court or custody?

Yes. Collected under chain-of-custody and lab-confirmed, hair results are commonly used in family court and custody cases to show sustained sobriety.

Does a hair test detect use from yesterday?

Usually not the last few days — hair needs time to grow out from the scalp. For very recent use, a urine or oral-fluid test is more appropriate. We can combine both if needed.

How long do hair test results take?

Typically 24–72 hours after the sample reaches the lab, depending on the panel and whether confirmation is required.

Fresno · Clovis · Madera · The Central Valley

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Walk-ins welcome and same-day appointments across the Central Valley. Call or text now and we'll get you scheduled fast — court-ordered, DOT, employer, or individual. Results handled with full chain-of-custody.

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