using suitable preparations of highly purified native or recombinant human TPO as the antigen, should replace the older insensitive, semi-quantitative anti-microsomal antibody (AMA) agglutination ...

Normal serum level is 0. Anti-TPO - Antithyroid peroxidase (anti-TPO) antibodies to thyroid peroxidase, the thyroid microsomal antigen, are elevated in chronic autoimmune thyroiditis. Normal serum ...