Abstract:The performance characteristics and diagnostic value of a monoclonal antibody-based radioimmunoassay for serum total thyroxine (Mallinckrodt) are described. Between-batch precision (coefficient of Variation) was 10.4% at 87 nmol/1 and 3.3% at 185 nmolA Scatchard analysis revealed a linear plot with a K a of 5.4 x 10 8 1/mol. \ Sensitivity was 4.5 nmol/1 of thyroxine. An association study showed that the assay reached equilibrium well within the specified incubation time. Cross-reaction of triiodothyronine and … Show more
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