Auc - What is the AUC in medical diagnosis?

In medical diagnostics, the AUC is an essential measure of the accuracy of diagnostic tests. The closer the ROC curve is to the upper left corner of the graph, the higher the test's accuracy. This is because at the upper left corner, sensitivity equals 1, and the false-positive rate equals 0 (specificity equals 1). Therefore, an ideal ROC curve will have an AUC of 1.0.