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).
Copyright © 2012, Campbell R. Harvey. All Rights Reserved.

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.
Farlex Financial Dictionary. © 2012 Farlex, Inc. All Rights Reserved

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.
Wall Street Words: An A to Z Guide to Investment Terms for Today's Investor by David L. Scott. Copyright © 2003 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. All rights reserved.
References in periodicals archive ?
Successful minimally invasive parathyroidectomy for primary hyperparathyroidism without using intraoperative parathyroid hormone assays. The American Journal of Surgery 2007;191:52-56
Hormone assays were conducted in 10 assessment periods, with the first 6 at 8-month intervals.
"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.
At the end of incubation, tubes were centrifuged at 300 g for 15 min, the cell supernatants collected and frozen at -20 |degrees~ C until ready for hormone assays.
In addition to hormone assays, saliva has proven valuable for antibody assessment, especially of the immunoglobulins.
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.
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).
The 25-minute ART course covers the ART cycle and includes a review of hormone assays essential to treatment decisions.
Thyroid hormone assays often require larger blood volumes than ate obtainable from rodent pups.