A thyroid peroxidase antibodies test checks the levels of antibodies made against the compound thyroid peroxidase (TPO) in the bloodstream. Thyroid peroxidase is an enzyme produced by the thyroid gland.

SPECIMEN: 2 mL (1 mL min.) Serum from 1 SST. Ship refrigerated or frozen.
STABILITY: Room: 8 hrs; Refrigerated: 48 hrs; Frozen: 2 weeks
REPORT: Daily
INSTRUCTIONS: No special preparation is required.
USAGE: Determination of TPO antibody levels is the most sensitive test for detecting autoimmune thyroid disease like Hashimoto thyroiditis (90%), Idiopathic myxedema and Graves disease (60-80%). Presence of TPO antibodies in subclinical hypothyroidism is associated with an increased risk of developing overt hypothyroidism. This assay helps in the diagnosis of thyroid autoimmune disorders and serves as a diagnostic tool in deciding therapy for subclinical hypothyroidism.