Breathalyzer Accuracy

When blowing into a breathalyzer subjects with larger lung volume may have lower breath alcohol content than a subject with a small lung volume because these subjects do not need to exhale as great a fraction of their vital capacity. Breath physiology expert, Michael Hlastala estimates that breath tests may vary at least 20% from actual blood alcohol concentration.

One Response to “Breathalyzer Accuracy”

  1. Corey Says:

    They are the most inaccurate tools for measuring BAC. Driving while impaired was simply outlawed back in the old days. BAC affects individuals differently and not everyone is impaired at .08, .10, or even .14!