The Q.E.D.® test can be used as an accurate screen in place of blood or breath tests. In clinical trials, saliva alcohol levels measured by the Q.E.D.® demonstrated high correlation to blood analyzed by gas chromatography (r = 0.98). The Q.E.D.® A150 test has a quantitative range of 0-145 mg/dL (0.0% - 0.145% BAC).
Q.E.D.® (Saliva) vs. G.C. (Whole Blood) Study conducted at Thomas Jefferson Hospital, Philadelphia, PA