TPO antibodies (anti-TPO) are proteins produced by the immune system that mistakenly target thyroid peroxidase, an enzyme essential for thyroid hormone production.
Category: Thyroid Panel
Also known as: tpo antibodies, anti-tpo, thyroid peroxidase antibodies, tpo ab, anti tpo, thyroid peroxidase ab
Reference range: 0–35 IU/mL (Source: ABIM)
Standard unit: IU/mL
High values may indicate
High TPO antibodies may indicate Hashimoto's thyroiditis, Graves' disease, or other autoimmune thyroid conditions. Elevated levels increase the risk of developing hypothyroidism.
Low values may indicate
Low or absent TPO antibodies are normal and suggest no autoimmune thyroid activity.