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URINE DRUG TEST
A urine drug screen can detect a range of drugs. These include:
* alcohol
* amphetamines
* barbiturates
* benzodiazepines
* cocaine
* marijuana
* methamphetamine
* opioids
* phencyclidine (PCP)
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Many factors affect the length of time that a test can detect a certain drug in the body. These factors include:
* body mass
* hydration levels
* the acidity of the urine
* how long ago the person took the drug
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If a person uses a drug very frequently or heavily, a urine test will detect the drug for a longer period. For example, the detection times for marijuana can depend on how often a person uses it: Frequency of marijuana use.
Detection times after use:
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* Single use 3 days
* Moderate use, or 4 times per week 5–7 days
* Daily use 10–15 days
* Heavy use more than 30 days
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This group shows how long a urine test can detect certain drugs after a person has taken them:
drug detection time after use.
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Alcohol 7–12 hours
Short-acting barbiturates 24 hours
Amphetamines 48 hours
Heroin 48 hours
Morphine 48–72 hours
Cocaine metabolites 2–4 days
Methadone 3 days
Short-acting benzodiazepines 3 days
PCP 8 days
Long-acting barbiturates 3 weeks
Long-acting benzodiazepines 30 days