A chemical test is used to measure:
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Biological age.
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Reaction time.
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Vision.
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Blood alcohol content (BAC).
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Explanation
A chemical test is used to measure blood alcohol content (BAC). This test determines the concentration of alcohol in your bloodstream by analyzing samples such as breath, blood, urine, or other bodily substances. It provides an objective measurement to assess whether a driver's BAC exceeds the legal limit.
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