What is the limitation of BAC charts?

The key aspect of BAC charts is that they provide estimates of a person’s Blood Alcohol Concentration based on various factors such as weight, drinks consumed, and time. These charts are not precise instruments; instead, they offer a general idea of how alcohol affects the body. Therefore, they inherently lack legal standing since they do not account for individual differences in metabolism, tolerance, or other physiological factors that can influence BAC levels.

This estimation aspect means that while they can suggest a range in which a person's BAC might fall, the actual measurement can differ, making them unsuitable for legal purposes where accuracy is paramount. Thus, the understanding that BAC charts only provide estimates and hold no legal value is fundamental for anyone interpreting their results, especially in contexts involving legal assessments or decisions.