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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.
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 ]
Most people who take a drug test take a presumptive test, cheaper and faster than other methods of testing. However, it is less accurate and can render false results. The FDA recommends for confirmatory testing to be conducted and the placing of a warning label on the presumptive drug test: "This assay provides only a preliminary result.
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 ...
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. During testing, a urine specimen migrates upward by capillary action. A drug, if present in the urine specimen below ...
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 ...
Patients who can get pregnant are required to pick and use two birth control methods (abstinence included), and must take doctor-administered pregnancy tests in two consecutive months. After the second (confirmatory) negative pregnancy test, the patient must also take an online comprehension test to ensure they understand the requirements of ...
Blood; Urine; CSF; Feces; Vital signs; Reference ranges for urine tests are described below: Measurement Lower limit Upper limit Unit Urinary specific gravity: 1.003 ...