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en.wikipedia.org/wiki/Drug_test

A drug test is a technical analysis of a biological specimen, for example urine, hair, blood, ... For example, heroin and cocaine can only be detected for a few hours after use, but their metabolites can be detected for several days in urine. ..... Hair drug testing is a method that can detect drug use over a much longer period of ...

www.health-street.net/blog-drug-testing/how-long-does-cocaine-last-in-your-system

Apr 19, 2016 ... Learn the factors which determine how long cocaine can be detected ... Urine drug testing remains the most non-invasive method, and the most ...

americanaddictioncenters.org/cocaine-treatment/how-long-in-system

However, heavy, long-term use will cause the drug to start to accumulate in body tissues, allowing certain tests to detect the drug in the system for an extended ...

buddymd.com/benzoylecgonine-cocaine-drug-elimination-time-and-clearance

Benzoylecgonine is the main metabolite of cocaine, which is used in drug screening test. Many factors determine how quickly it gets cleared from the body.

drug.addictionblog.org/how-long-does-cocaine-stay-in-blood-hair-or-urine

Dec 26, 2013 ... If you want to learn more about cocaine drug testing and your chances to pass a urine, blood, hair, or saliva drug test, continue reading.

luxury.rehabs.com/cocaine-addiction/how-long-does-it-stay-in-your-system

How long is cocaine detectable by drug tests? ... Often people who abuse cocaine are concerned about how long it will stay in their system and how long it will ...

www.drugs.com/article/drug-testing.html

How long do drugs stay in your system ... Cocaine urine test: Up to 4 days.

www.allhealthsite.com/how-long-does-cocaine-stay-in-your-system-urine-blood.html

This preferred cocaine testing method since this is ... A follow-up drug test will be required to verify the initial result.

druglibrary.org/schaffer/cocaine/clearurine.htm

URINE TESTING FOR COCAINE: ... employers use the minimum cutoff levels set by the National Institute of Drug Abuse (NIDA) to establish a positive drug test.

www.drugdetection.net/drug.htm

Urine drug testing accuracy is variable depending on how the testing is done. ... The detection of any drug is subject to the timing and amount of the dose. Subjects ... BLOOD: Cocaine parent present up to approximately 5-6 hours post dose.