This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Specificity of a test means, all except - 
Select and explain. 
A. Identifies those without disease, B. True positive, C. True negative, D. An ideal screening test should have 100% specificity
B: True positive
Answer: B: True positive 
Explanation: 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.