Assay

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Assay

Metal purity test to confirm that the metal meets the standards for trading on a commodities exchange (commodities exchange center).

Assay

To test precious metals for their purity. This is important to commodities and futures involving precious metals, in which the quality of the underlying metals must be specified in the contract.

assay

A test to determine the purity of gold, silver, or other precious metals. Metals used for delivery of futures contracts must be assayed to verify that they meet standards established by the exchange on which the contracts trade.
References in periodicals archive ?
Successful minimally invasive parathyroidectomy for primary hyperparathyroidism without using intraoperative parathyroid hormone assays.
Waves of anovulatory ovarian activity were documented by hormone assays and published in the scientific literature during the late 1950s and early 1960s," noted the Australian fertility expert Professor-Emeritus James B.
The presence of antibodies in some autoimmune diseases could interfere with thyroid hormone assays.
These fractions were frozen at -20 |degrees~ C until ready for hormone assays.
Subclassification based on hormone expression is sometimes predicted by preoperative serum hormone assays, but it is confirmed by pathology to determine both prognosis and the need for subsequent therapy (12).
In addition to hormone assays, saliva has proven valuable for antibody assessment, especially of the immunoglobulins.
The 25-minute ART course covers the ART cycle and includes a review of hormone assays essential to treatment decisions.
Fish for thyroid hormone assays were held at -80[degrees]C until analysis.
Morphologic measurements, serum hormone assays, and BMD assessments were performed in 11 adult women with the salt-losing (SL) form of CAH who had been receiving glucocorticoid replacement therapy since infancy, and in 15 women with the simple virilizing (SV) form of CAH, who had begun glucocorticoid treatment at ages varying from infancy to 22 years.
To support ART clinics, the laboratory must be able to provide a specific array of hormone assays.