assay

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assay

1. 
a. an analysis, esp a determination of the amount of metal in an ore or the amounts of impurities in a precious metal
b. (as modifier): an assay office
2. a substance undergoing an analysis
3. a written report on the results of an analysis

assay

[′a‚sā]
(analytical chemistry)
Qualitative or quantitative determination of the components of a material, as an ore or a drug.
References in periodicals archive ?
Comparison of a cytosol radioreceptor assay with a radioimmunoassay for 1,25-dihydroxyvitamin D in serum or plasma.
In 1998, we added the Kronus[R] TRAb radioreceptor assay (TRAb) to our test menu to reduce the number of requests for TSI.
Heterogeneity of pituitary and plasma prolactin in man: decreased affinity of "Big" prolactin in a radioreceptor assay and evidence for its secretion.