assay
Definitions
The testing of a metal or ore to determine its ingredients and quality.
A procedure in laboratory medicine or biology used to measure the presence, amount, or activity of a target substance.
An initial attempt or trial of something.
Examples
The laboratory performed an assay to determine the purity of the gold sample.
Scientists conducted a biological assay to test the effectiveness of the new vaccine.
Synonyms
analysis evaluation test examination assessment appraisal trial