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assay
(redirected from TSH assay)

   Also found in: Dictionary/thesaurus, Medical, Financial, Encyclopedia, Wikipedia 0.01 sec.
assay noun analysis, ascertainment, assessment, breakdown, calculation, computation, diagnosis, experiment, exploration, measurement, probation, probe, test, test case, verification
assay verb analyze, ascertain, assess, calculate, commute, diagnose, endeavor, evaluate, experiment, measure, research, test, try, verify, weigh
See also: analysis, attempt, diagnosis, endeavor, experiment, inquiry

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.



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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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