A strategy used in a population to identify an unrecognised disease in individuals without signs or symptoms.

Screening, in medicine, is a strategy used to look for as-yet-unrecognised conditions or risk markers.[

This testing can be applied to individuals or to a whole population. The people tested may not exhibit any signs or symptoms of a disease, or they might exhibit only one or two symptoms, which by themselves do not indicate a definitive diagnosis.

Bedside dysphagia screen.

Screening for glioma.

Unruptured intracranial aneurysm screening.