Clinical Chemistry
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Clinical Chemistry 32: 461-464, 1986;
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Clinical Chemistry, Vol 32, 461-464, Copyright © 1986 by American Association for Clinical Chemistry

Diagnostic value of thyrotropin concentrations in serum as measured by a sensitive immunoradiometric assay

F Bassett, CJ Eastman, G Ma, GF Maberly and HC Smith

A new, highly sensitive immunoradiometric thyrotropin (TSH) assay involving solid-phase-coupled monoclonal antibodies (Boots-Celltech Sucrosep IRMA-TSH) has been evaluated in a wide variety of patients with thyroidal and nonthyroidal illnesses and the results compared with those obtained by conventional diagnostic TSH RIAs. The sensitivity of the present assay ranged from 0.036 to 0.1 milli-int. unit/L (mean 0.056). TSH, measurable in serum of each of 128 euthyroid patients, ranged from 0.1 to 6.3 milli-int. units/L (mean 1.7, SD 1.1). Similar concentrations were found in 15 healthy pregnant women. TSH was undetectable in 27 hyperthyroid patients, of whom six were tested with thyroliberin stimulation and failed to respond. The mean TSH concentration measured in 62 seriously ill hospital patients of 2.7 (SD 2.5) milli-int. units/L was significantly higher (p less than 0.05) than in the euthyroid patients. Basal values and peak TSH responses to thyroliberin testing correlated well (r = 0.63, n = 48), irrespective of clinical diagnosis. We conclude that the present assay readily discriminates between euthyroid and hyperthyroid patients and should replace conventional TSH RIAs in diagnostic laboratories.


The following articles in journals at HighWire Press have cited this article:


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 Arch Intern MedHome page
C. T. Sawin, A. Geller, M. M. Kaplan, P. Bacharach, P. W. F. Wilson, and J. M. Hershman
Low Serum Thyrotropin (Thyroid-Stimulating Hormone) in Older Persons Without Hyperthyroidism
Arch Intern Med, January 1, 1991; 151(1): 165 - 168.
[Abstract] [PDF]

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 Asia Pac J Public HealthHome page
A. Ouyang, T. Su, X. Pang, and J. M. Hershman
Serum TSH, FT3, and FT4 Levels in Inhabitants of an Endemic Goiter Area in China Supplied Iodized Salt for Twenty-five Years
Asia Pac J Public Health, October 1, 1989; 3(4): 301 - 305.
[Abstract] [PDF]

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 Arch Intern MedHome page
E. T. de los Santos, G. H. Starich, and E. L. Mazzaferri
Sensitivity, Specificity, and Cost-effectiveness of the Sensitive Thyrotropin Assay in the Diagnosis of Thyroid Disease in Ambulatory Patients
Arch Intern Med, March 1, 1989; 149(3): 526 - 532.
[Abstract] [PDF]

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 Arch Intern MedHome page
D. A. Ehrmann, M. Weinberg, and D. H. Same
Limitations to the Use of a Sensitive Assay for Serum Thyrotropin in the Assessment of Thyroid Status
Arch Intern Med, February 1, 1989; 149(2): 369 - 372.
[Abstract] [PDF]

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 ANN INTERN MEDHome page
D. A. Ehrmann and D. H. Sarne
Serum Thyrotropin and the Assessment of Thyroid Status
Ann Intern Med, February 1, 1989; 110(3): 179 - 181.
[Abstract] [PDF]


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Copyright © 1986 by the American Association for Clinical Chemistry.