a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or antibodies etc.

examination of tissues or liquids from the living body to determine the existence or cause of a disease

a test for diagnosing reading ability; words are deleted from a prose passage and the reader is required to fill in the blanks

a test performed at home in which you collect specimens of your stool that are tested for traces of blood; used to detect colorectal cancers

diagnostic tests of the alimentary canal; usually involves inserting a contrast medium (such as barium sulfate) and taking an X-ray

test of the body's ability to metabolize carbohydrates; used in the diagnosis of hypoglycemia and diabetes mellitus