“…It has been reported that serum immunoglobulin of some patients with autoimmune thyroiditis or other thyroid diseases binds T3 and/or T4 (Robbins et al, 1956;Premachandra and Blumenthal, 1967;Ochi et al, 1972;Staeheli et al, 1975). This abnormal binding is, in general, more commonly observed in patients with higher titers of anti-thyroglobulin antibody, although Wu and Green (1976) reported a case of T3-specific binding without elevated titers of antibodies to thyroglobulin or thyroid microsomes.…”