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2. Blood alcohol content - Wikipedia

   en.wikipedia.org/wiki/Blood_alcohol_content

   5639-0, 5640-8, 15120-9, 56478-1. Blood alcohol content (BAC), also called blood alcohol concentration or blood alcohol level, is a measurement of alcohol intoxication used for legal or medical purposes. [ 1 ] BAC is expressed as mass of alcohol per volume of blood.

3. Drug test - Wikipedia

   en.wikipedia.org/wiki/Drug_test

   MeSH. D015813. A drug test (also often toxicology screen or tox screen) is a technical analysis of a biological specimen, for example urine, hair, blood, breath, sweat, or oral fluid/saliva —to determine the presence or absence of specified parent drugs or their metabolites. Major applications of drug testing include detection of the presence ...

4. Cannabis drug testing - Wikipedia

   en.wikipedia.org/wiki/Cannabis_drug_testing

   The main metabolite excreted in the urine is 11-Nor-9-carboxy-THC, also known as THC-COOH. 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 ...

5. Field sobriety testing - Wikipedia

   en.wikipedia.org/wiki/Field_sobriety_testing

   The tests were used in real-world conditions and reported as being able to determine intoxication above the then-effective blood alcohol concentration (BAC) limit of 0.10%. After some US states began lowering their legal BAC limits to 0.08%, other studies reported that the battery could also be used to detect BACs at or above 0.08% and above ...

6. Carbohydrate deficient transferrin - Wikipedia

   en.wikipedia.org/wiki/Carbohydrate_deficient...

   Test for alcohol consumption. Carbohydrate-deficient transferrin is elevated in the blood of people with heavy alcohol consumption but elevated levels can also be found in a number of medical conditions. The limitations of the assay depend upon the methodology of the test. HPLC (High Performance Liquid Chromatography) can detect certain genetic ...

7. Breathalyzer - Wikipedia

   en.wikipedia.org/wiki/Breathalyzer

   The ratio of venous blood alcohol content to breath alcohol content may vary significantly, from 1300:1 to 3100:1. Assuming a blood-alcohol concentration of 0.07%, for example, a person could have a partition ratio of 1500:1 and a breath test reading of 0.10 g/2100 mL, over the legal limit in some jurisdictions. [16]