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Assay
(redirected from TSH assay)

   Also found in: Dictionary/thesaurus, Medical, Legal, Encyclopedia, Wikipedia 0.01 sec.
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.


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Thus, in the absence of sensitive TSH assays, a serum [FT.
Thyroid-stimulating hormone testing is the preferred approach because: 1) TSH is central to the negative-feedback system; 2) small changes in serum thyroid function cause logarithmic amplification in TSH secretion; and (3) the most advanced (third-generation) chemiluminescent TSH assays can now detect both elevation and significant lowering of TSH levels, and are capable of reliably measuring values <0.
The cost-effectiveness of the blood test, known as a TSH assay, compared favorably to other preventive measures - such as screening tests for high blood pressure and breast cancer - routinely performed by doctors, according to study co-author Dr.
 
 
 
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