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 ?
Humoral immunosuppressant activity of aflatoxin ingestion in rabbits measured by response to Mycobacterium bovis antigens using enzyme-linked immunosorbent assay and serum protein electrophoresis.
Individual HDM allergens were measured using monoclonal antibody-based enzyme-linked immunosorbent assays (ELISAs) as described by Chapman et al.
Performance of immunoglobulin G (IgG) and IgM enzyme-linked immunosorbent assays using a West Nile virus recombinant antigen (preM/E) for detection of West Nile virus- and other flavivirus-specific antibodies.
14 April 2014 - Finnish diagnostics firm Biohit Oyj (HEL:BIOBV) said Monday it had finalised validation of its GastroPanel non-invasive blood test for diagnosis and screening of gastric disorders for US Dynex Technologies' DS2-ELISA (enzyme-linked immunosorbent assay) automate.
This study describes a simple method for extraction and detection of steroid metabolites in brown kiwi feces by enzyme-linked immunosorbent assay (ELISA).
An enzyme-linked immunosorbent assay (ELISA) was performed by using cellular fluid and Laguna Negra virus antigens for immunoglobulin M (IgM) detection (MAC-ELISA), and recombinant SNV antigens for IgG detection.
In the Lyme enzyme-linked immunosorbent assay (ELISA)--the screening test of choice--up to 20% of tests return falsely positive.
The test approved last week, a product of Abbott Laboratories of North Chicago, Ill., is called an ELISA (enzyme-linked immunosorbent assay).
Seroprevalences against influenza A viruses, detected by a double-antibody sandwich-blocking enzyme-linked immunosorbent assay (ELISA), were 11% in gulls, 16% in coots, and 45% in ducks.
Samples were initially tested for WNV-reactive antibodies by using an epitope-blocking enzyme-linked immunosorbent assay (blocking ELISA) (6).
But because the immunoblot test is more difficult to do and more time consuming, it is probably best used as an added test when an enzyme-linked immunosorbent assay (ELISA) yields doubtful results, especially in young children, said Dr.

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