Elevated thyroid peroxidase antibodies in pregnant women are often indicative of autoimmune thyroiditis and generally do not require treatment if thyroid function is normal. If thyroid function is normal, no treatment is needed. However, if thyroid function is abnormal, treatment as prescribed by the doctor may be needed. High thyroid peroxidase antibodies in pregnant women are usually a sign of autoimmune thyroiditis such as Hashimoto’s thyroiditis. Early in the course of the disease, there may be only elevated thyroid peroxidase antibodies and no clinical symptoms; therefore, thyroid peroxidase antibodies and thyroglobulin antibodies are important diagnostic indicators at this time. Hypothyroidism may only manifest itself late in the course of the disease. Patients without thyroid function abnormalities generally do not require special treatment; levothyroxine tablets may be given for hypothyroidism. Pregnant women with high thyroid peroxidase antibodies are advised to seek prompt medical attention and under the guidance of a doctor for further examination to determine whether and how treatment is needed.