“…The calculation of positive predictive value and negative predictive value has not been conducted elsewhere for oral lesions, but, for glandular lesions, the values were found to vary from 83% to 100% and 87.8% to 99%, respectively. 1,5,13,15 The rates of false positives and false negatives in this study were 6.7% and 13.3%, respectively. These figures agree with those reported in the literature, which indicates that the false positive rate typically varies from 0 to 3% and that the false negative rate varies from 0 to 20%.…”