assay Meaning and Definition
1. n. 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.
2. n. an appraisal of the state of affairs
3. n. a written report of the results of an analysis of the composition of some substance
4. n. a substance that is undergoing an analysis of its components
5. v. analyze (chemical substances)
6. v. make an effort or attempt
An assay is an investigative (analytic) procedure in laboratory medicine, pharmacology, environmental biology and molecular biology for qualitatively assessing or quantitatively measuring the presence or amount or the functional activity of a target entity (the analyte).
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