title: A newer avenue for evaluation of thyroid dysfunction.
abstract: Attempt has been made to rationalise the biochemical assessment of patients suspected to have thyroid dysfunction by introduction of a new rapid and supersensitive immunoradiometric assay (IRMA) for TSH. 294 patients were subjected to thyroid investigation viz; tT3, tT4 and TSH (IRMA). Of these, 51 (17.34%) were hypothyroid, 22 (7.48%) were hyperthyroid and 221 (75.1%) were euthyroid. The ratio of thyroid disorder in male to female was 1:3.38. In all patients with hyperthyroidism TSH (IRMA) was 0.05 to undetectable and it was more than 4.5 ulu/ml in hypothyroid patients. TSH (IRMA) was low in one euthyroid patient a 0.34% incidence of false negativity. In 2 patients with subclinical hyperthyroidism TSH (IRMA) was low while tT3 and tT4 were normal. TSH (IRMA) therefore may obviate the need for more time consuming and expensive TRH test and simplify the approach to thyroid function tests in patients suspected to have masked or overt hyperthyroidism.
authors.forename: J
authors.initials: J
authors.lastname: Sheth
authors.forename: P
authors.initials: P
authors.lastname: Thakore
authors.forename: S
authors.initials: S
authors.lastname: Shah
authors.forename: B
authors.initials: B
authors.lastname: Shah
authors.forename: N
authors.initials: N
authors.lastname: Shan
authors.forename: F
authors.initials: F
authors.lastname: Sheth
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D006980:Hyperthyroidism / Q000175:diagnosis*; D007037:Hypothyroidism / Q000175:diagnosis*; D015592:Immunoradiometric Assay; D008297:Male; D008875:Middle Aged; D013960:Thyroid Function Tests / Q000379:methods*; D013963:Thyroid Hormones / Q000097:blood
chemical_list: D013963:Thyroid Hormones