Table II represents the sensitivity, specificity, posi- tive and negative predictive values, and accuracy of various BNP levels in determining LV function with use of echocardiography as the gold standard. The differ- ent cut points were picked from the ROC curve. As can be seen, a BNP level cutoff value at 38.5 pg/mL was 95% sensitive for the detection of LV dysfunction and 66% specific. Levels at or below 38.5 pg/mL had a negative predictive value of 93%. A BNP cut point of 75 pg/mL exhibited the best specificity (98%), best positive predictive value (98%), and the highest accu- racy (93%)