immunoradiometric assay

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Related to immunoradiometric assay: radioimmunoassay

im·mu·no·ra·di·o·met·ric as·say

an assay that differs from conventional radioimmunoassay in that the compound to be measured combines directly with radioactively labeled antibodies.

immunoradiometric assay

Abbreviation: IRMA
Radioassay in which an antibody is labeled with a radioactive tracer. Antigens are detected when they bind, reversibly, to the antibody.
See also: assay
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References in periodicals archive ?
Pair combinations of the new and formerly characterized mAbs E146 and E149 were evaluated in 2-site immunoradiometric assays (Table 1).
This immunoradiometric assay uses 2 antibodies, one directed against the 11-17 and the other against the 24-32 sequence of the peptide.
Analytical performance and diagnostic accuracy of a fully-automated electrochemiluminescent assay of the N-terminal fragment of brain natriuretic peptide in patients with cardiomyopathy: comparison with immunoradiometric assay methods for brain natriuretic peptide and atrial natriuretic peptide.
"Hook effect" in calcitonin immunoradiometric assay in patients with metastatic medullary thyroid carcinoma: case report and review of the literature.

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