- To prove; to try a substance; to determine the chemical nature of a substance by means of reagents.
- A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues, or excretions of the body, or to determine the presence or degree of a psychological or behavioral trait.
- A reagent used in making a test
[L. testum, an earthen vessel]
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Examples: glitazone, GI cocktail, etc.