Medical tests, like the blood tests that look for antibodies to the novel coronavirus, aren't perfect. Sometimes, you end up with a false negative: You actually did have the coronavirus and your ...

Chance agreement may account for a sizeable proportion of the specificity of a screening test when the disease prevalence is low. Conversely, the observed sensitivity may be largely accounted for by ...

We are counting on COVID-19 antibody tests to estimate the prevalence and lethality of the novel coronavirus and to identify people who were infected but now may be immune. Are the tests up to those ...

The Simtomax point of care test (POCT) has low sensitivity in screening patients for celiac disease, particularly when used for pediatric patients in whom the probability of celiac disease is high, a ...

Current Johne’s tests have limitations in sensitivity and specificity, especially in early stages of infection. As a result, large sample sizes are needed to determine with confidence whether a herd ...