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ASSAY. A chemical examination of metals, by which the quantity of valuable or precious metal contained in any mineral or metallic mixture is ascertained. 2. By the acts of Congress of March 3, 1823, 3 Story's L. U. S. 1924; of June 25, 1834, 4 Shars. cont. Story's L. U. S. 2373; and of June 28, 1834, Id. 2377, it is made the duty of the secretary of the treasury to cause assays to be made at the mint of the United States, of certain coins made current by the said acts, and to make report of the result thereof to congress.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
Radioreceptor assay of anti-TSH receptor antibody activity: Comparison of assays using unextracted serum and immunoglobulin fractions, and standardization of expression of activities.
Here we present a simple radioreceptor assay (RRA) to quantitate plasma and urine concentrations of LU135252, a recently discovered orally active selective antagonist of the [ET.sub.A] receptor (26).
Serum and tissue AGEs have also been measured by radioreceptor assay [9,15], for which cell cultures are needed; the procedure is labor and time consuming.