Time periods list of substances detected in the urine post consumption

Time periods list of substances detected in the urine post consumption

What substances (or metabolites) can be detected in the urine at the following times after consumption?

  • Up to 2 to 4 weeks? Long acting barbiturates, marijuana (if use was heavy)
  • Up to a week? Phencyclidine (PCP), methaqualone
  • Up to 4 days? Cocaine metabolites
  • Up to 72 hours? Marijuana (occasional use), morphine, heroin, methadone, benzodiazepines
  • Up to 48 hours? Amphetamines, codeine, propoxyphene
  • Less than 12 hours? Alcohol, cocaine

What about hair follicle testing?

Most of these substances can be detected for up to 90 days in hair follicles.

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