In a sample of 149 emergency surgical patients, binge drinking was assessed through interviews. Sensitivity, specificity, and positive and negative predictive values were calculated for three questionnaires-the Malmö modification of brief MAST (Mm-MAST), CAGE, and the Trauma Scale-and two biological markers-carbohydrate-deficient transferrin (CDT) and gamma-glutamyltransferase (GGT). Binge drinking was reported by 42% of male patients, aged 16-29 years; 66% of female patients, aged 16-29 years; 27% of male patients, aged 30-73 years; and 16% of female patients, aged 30-73 years. All alcohol biomarkers had low sensitivity to binge drinking among women. Mm-MAST alone and CAGE and CDT combined were sensitive to identifying binge drinking among men aged 30-73 years. The three questionnaires combined had a sensitivity of 0.82 to binge drinking among men aged 16-29 years.