The purpose of the case study was to evaluate the diagnostic efficiency of radioimmunoassay (RIA) and of immune-enzyme assay (IEA) in indicating the HBsAg in the blood of children with viral hepatitis. The study was based on a simultaneous indication of HBsAg by RIA and IEA in 98 samples of blood serum (plasma). It was shown that both assays are practically univocal in as far as the HBsAg indication within the mentioned circumstances is concerned.
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