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The preliminary breath test or preliminary alcohol screening test uses small hand-held breath analyzers (hand-held breathalyzers). (The terms "preliminary breath test" ("PBT") and "preliminary alcohol screening test" reference the same devices and functions.) They are generally based on electrochemical platinum fuel cell analysis.
Breath test is a widespread method for quickly determining alcohol intoxication. A breath test measures the alcohol concentration in the body by a deep-lung breath. There are different instruments used for measuring the alcohol content of an individual though their breath. Breathalyzer is a widely known instrument which was developed in 1954 ...
If police suspect that a driver is under the influence of a substance such as alcohol, then the driver will undergo a breath test. [36] 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 ]
The Preliminary Breath Test (PBT) or Preliminary Alcohol Screening test (PAS) is sometimes categorised as part of field sobriety testing, although it is not part of the series of performance tests. The PBT (or PAS) uses a portable breath tester.
The breath test has been validated as a pre-screening test for people who have no or mild symptoms of COVID-19. From April 2021, the device was operational in COVID-19 test drive-ins, conferences and events, i.e. Eurovision Song Contest 2021. Subjects must abstain from alcohol for eight hours prior to taking the breath test. [citation needed]
In the U.S., the Federal Aviation Administration recommends eight hours between drinking and flying and that employees be removed from their duties if their blood alcohol concentration registers 0 ...