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Hair Drug Screen

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Hair drug test is rather exact, and besides, it can show if the individual took drugs maximally 6 months before. When the drug is taken, toxins reach the hair-root and are stored there forever, so the lab can easily detect, when it has been used. Most laboratories use only 3-5 cm from the hair-root to receive results. It's the period of approximately 90 days, depending on the pace of person's hair growth. To avoid such kind of test, some people shave their hair, as the sample can't be taken from a bald one. But if the lab can't cut the hair of required length it uses an acceptable type of drug test. Sometimes the absence of required sample means that you have no more rights to claim for the employment found.

Hair Drug Screen Detection Period

  • Amphetamines (except meth): up to 90 days
  • Methamphetamine: up to 90 days
  • Barbiturates (except phenobarbital): up to 90 days
  • Phenobarbital: up to 90 days
  • Benzodiazepines: up to 90 days
  • Cannabis: up to 90 days
  • Cocaine: up to 90 days
  • Codeine: up to 90 days
  • Cotinine (a break-down product of nicotine): up to 90 days
  • Morphine: up to 90 days
  • Heroin: up to 90 days
  • LSD: unknown
  • Methadone: unknown
  • PCP: up to 90 days