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The evaluation of a chemiluminescent assay for free thyroxine by comparison with equilibrium dialysis in clinical
J Beaman1, J S Woodhead, K Liewendahl
1Department of Medical Biochemistry, University of Wales College of Medicine, Cardiff, UK.
Clinica Chimica Acta; International Journal of Clinical Chemistry
|December 29, 1989
Abstract:
We have investigated the diagnostic performance of a chemiluminescence immunoassay for free thyroxine (Ciba Corning Magic Lite) in comparison with equilibrium dialysis. Agreement between the methods was satisfactory across a wide range of samples including those from patients with non-thyroidal illness. The results suggest that the chemiluminescence immunoassay is not subject to the artefacts of widely used analogue tracer methods for free thyroxine estimation.