Immunochemiluminometric assay for measurement of thyrotropin in various thyroid disorders.

ABSTRACT

The measurement of serum TSH concentration by the new ICMA had good precision and was more efficacious than RIA, IRMA and IEMA in distinguishing hyperthyroid patients from euthyroid subjects. Moreover, the measurement of serum TSH by ICMA was less interfered by high concentrations of hCG in sera of patients with trophoblastic disease. However, the assay needs special equipment and the cost is currently higher than other available methods.