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Drug Approximate Detection Time In Urine*

- Amphetamines: 24 - 48 hours
- Barbituates
    Short-Acting (i.e. secobarbital): 1 day
    Long-Acting (i.e. phenobarbital): 2-3 weeks
- Benzodiazepines: 3 days
- Cannabinoids Regular usage: 30 to forty-five days
- Cocaine: 2-4 days
- Methadone: 3 days
- Methaqualone: 14 days
- Opiates: 2 days
- Phencyclidine: 8 days (overdose)
- Propoxyphene: 6 hours to 2 days

* Note: Detection times vary depending on analytical method used, drug metabolism, patient's condition, fluid intake and method and frequency of ingestion. These are general guidelines only. Information provided by a local (USA) drug screening laboratory.

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