What does ETOH stand for in ethanol testing?

ETOH is a commonly used abbreviation in the field of ethanol testing that stands for "ethyl alcohol." This term refers to the specific chemical compound that is the active ingredient in alcoholic beverages and is the substance being measured in various sobriety tests, including breathalyzers like the Intoxilyzer 8000. Ethyl alcohol is the specific isomer of alcohol that has significant effects on the human body, making it a focal point for alcohol consumption and impairment studies.

In the context of the choices provided, this answer accurately identifies the substance of interest in ethanol testing. The other options, while related to alcohol in some way, do not correctly represent the compound being tested in this scenario. Ethanol, while closely related, does not capture the full chemical name; ethylene refers to a different compound entirely (an unsaturated hydrocarbon), and etching alcohol is a term that refers to alcohol used in cleaning or etching processes, rather than for testing purposes. Hence, the correct answer encapsulates the specific nature of what is being evaluated in ethanol testing.