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  2. Breathalyzer - Wikipedia

    en.wikipedia.org/wiki/Breathalyzer

    For example, a breathalyzer measurement of 0.10 mg/L of breath alcohol characterises approximately 0.0001×2251 g/L, or 0.2251 g/L of arterial blood alcohol concentration (equivalent to 0.2251 permille or 0.02251% BAC). [15] The ratio of venous blood alcohol content to breath alcohol content may vary significantly, from 1300:1 to 3100:1.

  3. Drug test - Wikipedia

    en.wikipedia.org/wiki/Drug_test

    Hair drug testing is a method that can detect drug use over a much longer period of time than saliva, sweat or urine tests. Hair testing is also more robust with respect to tampering. Thus, hair sampling is preferred by the US military [66] and by many large corporations, which are subject to Drug-Free Workplace Act of 1988.

  4. Breath analysis - Wikipedia

    en.wikipedia.org/wiki/Breath_analysis

    Breath aerosol analysis consists in the sampling and analysis of particles emitted in the respiratory tract and present in exhaled breath. [3] This is a relatively new field that holds great promise for direct diagnostics of pathogens, such as Influenza , and for in-vivo monitoring of the respiratory lining fluid ( Respiratory epithelium ...

  5. Robert Frank Borkenstein - Wikipedia

    en.wikipedia.org/wiki/Robert_Frank_Borkenstein

    This version was a more compact, and easier to operate breath test machine, which produced reliable results concerning blood alcohol content. [2] A revolutionary invention that aided the ability of traffic enforcement officials’ to identify and prosecute drivers under the influence of alcohol.

  6. Field sobriety testing - Wikipedia

    en.wikipedia.org/wiki/Field_sobriety_testing

    If over the legal limit of 0.05g per 100 millilitres of blood, then a second breath test will be taken and used as evidence against the driver when charged with the offence. [36] If a person is suspected to be under the influence of an illegal drug, they will be required to supply a urine sample. [37]

  7. Breath gas analysis - Wikipedia

    en.wikipedia.org/wiki/Breath_gas_analysis

    Breath gas analysis is a method for gaining information on the clinical state of an individual by monitoring volatile organic compounds (VOCs) present in the exhaled breath. Exhaled breath is naturally produced by the human body through expiration and therefore can be collected in non-invasively and in an unlimited way. [1]

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