Simpson G
J Anal Toxicol. 1989 Mar-Apr;13(2):120-3. doi: 10.1093/jat/13.2.120.
It has been reported that in the fully postabsorptive state, breath test results underestimate actual blood alcohol concentration (BAC) in 86% of the population. Reanalysis of the data on which this conclusion was based indicates 77% of these subjects were actually underestimated, and 23% were overestimated. Further refinements indicate 68% had their actual BAC underestimated, 16% were acceptably close to the actual BAC, and 16% were overestimated. Perhaps more importantly, comparison of this data with other results indicates fully postabsorptive status may not occur until more than three hours after drinking. Consequently, breath test results may tend to overestimate actual BAC for significant amounts of time after the peak BAC has been reached.
据报道，在完全吸收后状态下，呼气测试结果低估了86%人群的实际血液酒精浓度（BAC）。对得出该结论所依据的数据进行重新分析表明，这些受试者中有77%实际上被低估了，23%被高估了。进一步细化后显示，68%的人的实际BAC被低估，16%与实际BAC的接近程度可以接受，16%被高估。也许更重要的是，将这些数据与其他结果进行比较表明，完全吸收后状态可能要在饮酒三小时以上才会出现。因此，在达到BAC峰值后的相当长一段时间内，呼气测试结果可能会倾向于高估实际BAC。
