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2. Drug test - Wikipedia

   en.wikipedia.org/wiki/Drug_test

   Urine drug testing is one of the most common testing methods used. The enzyme-multiplied immune test is the most frequently used urinalysis. Complaints have been made about the relatively high rates of false positives using this test. [18] Urine drug tests screen the urine for the presence of a parent drug or its metabolites.

3. Prenatal cocaine exposure - Wikipedia

   en.wikipedia.org/wiki/Prenatal_cocaine_exposure

   The mother's urine can also be tested for drugs, but it cannot detect drugs used too far in the past or determine how much or how often the drugs were used. [34] Tests cannot generally detect cocaine use over a week prior to sample collection. [35] Mothers are more honest about cocaine use when their urine is also tested, but many users still ...

4. Urine test - Wikipedia

   en.wikipedia.org/wiki/Urine_test

   A urine test is any medical test performed on a urine specimen. The analysis of urine is a valuable diagnostic tool because its composition reflects the functioning of many body systems, particularly the kidneys and urinary system , and specimens are easy to obtain. [ 1 ]

5. Cannabis drug testing - Wikipedia

   en.wikipedia.org/wiki/Cannabis_drug_testing

   Most cannabis drug tests yield a positive result when the concentration of THC-COOH in urine exceeds 50 ng/mL. [10] Urine testing is an immunoassay based test on the principle of competitive binding. Drugs which may be present in the urine specimen compete against their respective drug conjugate for binding sites on their specific antibody ...

6. Pregnancy test - Wikipedia

   en.wikipedia.org/wiki/Pregnancy_test

   [7] [5] [8] The hCG concentration in blood is higher than in urine. Therefore, a blood test can be positive while the urine test is still negative. [9] [10] Qualitative tests (yes/no or positive/negative results) look for the presence of the beta subunit of human chorionic gonadotropin in blood or urine.

7. Man uses wife's urine for drug test, finds out she's pregnant

   www.aol.com/news/2014-11-06-man-uses-wife-s...

   A bus driver attempted to avoid a drug test by using his wife's urine instead of his own only to find out she's pregnant. As the BBC reports, an Egyptian man was required by his employer to submit ...