Specificity of a test means, all except -: (A) Identifies those without disease, (B) True positive, (C) True negative, (D) An ideal screening test should have 100% specificity
Answer is B. Specificity is the ability to identify correctly who do not have disease i.e., true negative.
The ability to identify correctly all those having a disease, i.e., true positive is known as sensitivity.
An ideal test should be 100% sensitive & 100% specific.