Antithyroglobulin antibodies higher than 100 is not normal. Antithyroglobulin antibodies are usually in the normal range of 0-85, if higher than the normal value is often considered to be autoimmune thyroid disease, it is recommended to go to the hospital in a timely manner, to make a clear diagnosis and then symptomatic treatment. Antithyroglobulin antibodies above 100 are often considered to be autoimmune thyroid disease, possibly Hashimoto’s thyroiditis. However, you can’t just look at this one indicator, if the thyroid peroxidase antibody is also high, no matter what the nail function is, you will consider Hashimoto’s thyroiditis. If thyroid peroxidase antibodies are normal and thyroid function is low, consider hypothyroidism caused by Hashimoto’s thyroiditis. Hashimoto’s thyroiditis is a type of thyroiditis caused by autoimmune disorder, which mainly manifests as goiter and hypothyroidism. If there is only an enlarged thyroid gland without hypothyroidism, no treatment is needed; if hypothyroidism occurs, levothyroxine sodium tablets can be taken under the guidance of a doctor. Patients with anti-thyroglobulin antibodies above 100 are advised to seek medical attention as soon as possible to slow down the progression of the disease and thus preserve thyroid function.