Thyroid Antibodies

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Also known as: Thyroid autoantibodies; Anti-thyroid antibodies; Anti-microsomal antibody; Thyroid microsomal antibody; Thyroid peroxidase antibody; TPOAb; Anti-TPO; thyroid binding inhibitory immunoglobulin TBII; Antithyroglobulin antibody; TgAb; TSH receptor antibody; TRAb; Thyroid stimulating immunoglobulin; TSI
Formal name: Thyroid peroxidase antibody (TPOAb); Thyroglobulin antibody (TgAb); Thyroid stimulating hormone receptor antibody (TRAb)
Related tests: Free T3; Free T4; TSH; Thyroglobulin

At a Glance

Why Get Tested?

To help diagnose and monitor autoimmune thyroid diseases and to distinguish these from other forms of thyroiditis, and thyroid disease; to help guide treatment decisions

When to Get Tested?

If you have an enlarged thyroid gland (goitre) and/or if your other thyroid function tests (such as Free T3, Free T4, and TSH) indicate thyroid dysfunction; if there are clinical features to suggest thyroid disease; in some patients with related autoimmune diseases

Sample Required?

A blood sample taken from a vein in your arm

Test Preparation Needed?