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assay
(redirected from TSH assay)

   Also found in: Dictionary/thesaurus, Medical, Legal, Financial, Wikipedia 0.01 sec.
assay
1. 
a. an analysis, esp a determination of the amount of metal in an ore or the amounts of impurities in a precious metal
b. (as modifier): an assay office
2. a substance undergoing an analysis
3. a written report on the results of an analysis

assay [′a‚sā]
(analytical chemistry)
Qualitative or quantitative determination of the components of a material, as an ore or a drug.


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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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