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Reference.org
Drug test
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<p>A drug test (also often toxicology screen or tox screen) is a technical analysis of a <a href="/facts/Biological_specimen/u51y6uvM">biological specimen</a>, for example <a href="/facts/Urine/oNUYVtvX">urine</a>, <a href="/facts/Hair/L7vt9FL3">hair</a>, <a href="/facts/Blood/03zEulkj">blood</a>, <a href="/facts/Breath/92Wov2gk">breath</a>, <a href="/facts/Sweat/c5zARtaT">sweat</a>, or <a href="/facts/Saliva/gK4nvayc">oral fluid/saliva</a>—to determine the presence or absence of specified parent drugs or their <a href="/facts/Metabolite/nAyywVtA">metabolites</a>. Major applications of drug testing include detection of the presence of <a href="/facts/Use_of_performance-enhancing_drugs_in_sport/h776s7YA">performance enhancing</a> <a href="/facts/Steroid/4AhMbgXt">steroids</a> in sport, employers and <a href="/facts/Parole/85Iky6MC">parole</a>/<a href="/facts/Probation/gTe249BW">probation</a> officers screening for <a href="/facts/Prohibition_(drugs)/FBKxqqnb">drugs prohibited</a> by law (such as <a href="/facts/Cocaine/rdQP4zwF">cocaine</a>, <a href="/facts/Methamphetamine/vS1jloMe">methamphetamine</a>, and <a href="/facts/Heroin/rYwrKHPk">heroin</a>) and <a href="/facts/Police_officers/I8r0VjSm">police officers</a> testing for the presence and concentration of <a href="/facts/Alcoholic_drink/HSHVWBtX">alcohol</a> (<a href="/facts/Ethanol/3lCLfBSP">ethanol</a>) in the blood commonly referred to as <a href="/facts/Blood_alcohol_content/lNFldaK5">BAC</a> (blood alcohol content). BAC tests are typically administered via a <a href="/facts/Breathalyzer/JM8VTLKv">breathalyzer</a> while <a href="/facts/Urinalysis/PeS2UfIG">urinalysis</a> is used for the vast majority of drug testing in <a href="/facts/Sports/0NazHJMC">sports</a> and the <a href="/facts/Workplace/RCIrBH8J">workplace</a>. Numerous other methods with varying degrees of accuracy, sensitivity (detection threshold/cutoff), and detection periods exist. </p><p>A drug test may also refer to <a href="/facts/Illegal_drug_trade/eaTugrky">a test</a> that provides quantitative <a href="/facts/Chemical_analysis/MHQf3YP6">chemical analysis</a> of an <a href="/facts/Illegal_drug/FBKxqqnb">illegal drug</a>, typically intended to help with <a href="/facts/Responsible_drug_use/LNorRq1o">responsible drug use</a>. </p>