[The role of binding proteins in radioimmunologic determination of the free thyroxine concentration using thyroxine analog methods: thyroxine immunoextraction versus thyroxine analog immunoextraction].

Amerlex FT4-analogue one step RIA was investigated to estimate the 125-Iodine thyroxine immunoextraction in sera with normal and abnormal concentrations of binding proteins. The following results were found: Amerlex analogue FT4 RIA equals an equilibrium-immunoassay. Thyroxin-analogue tracer is strongly bound to an albumin (80%). During the assay procedure… CONTINUE READING