FREE T3: optimal value: more than 3.0 PG/ML REVERSE T3: optimal value: less than a 10:1 ratio RT3:FT3 THYROID PEROXIDASE ANTIBODIES (TPOAB): optimal value: less than 4 IU/ML or negative THYROGLOBULIN ANTIBODIES (TGAB): optimal value: less than 4 IU/ML or negative

