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Hi all,
I have a test for TBII (Thyrotropin-Binding Inhibitory Immunoglobulin). The methodology is radioreceptor assay. The ref lab is using 83519. The CPT code book specifies radioimmunoassay (eg, RIA). Does anyone know if a radioreceptor assay is a type of radioimmunoassay???
I have a test for TBII (Thyrotropin-Binding Inhibitory Immunoglobulin). The methodology is radioreceptor assay. The ref lab is using 83519. The CPT code book specifies radioimmunoassay (eg, RIA). Does anyone know if a radioreceptor assay is a type of radioimmunoassay???