True Positive Rate (Sensitivity) Calculator

The true positive rate of a test (also called the sensitivity) is defined as the proportion of people with the disease who will have a positive result.

The true positive rate is the probability that the test says “A” when the real value is indeed A (i.e., it is a conditional probability, conditioned on A being true). This does not tell you how likely you are to be correct when calling “A” (i.e., the probability of a true positive, conditioned on the test result being “A”).