Is a thyroglobulin antibody level less than 0.90 μg/L normal?
In general, a thyroglobulin antibody level below 0.90 μg/L is usually considered abnormal. The specific analysis is as follows:
Thyroglobulin antibody is a substance produced by thyroid follicular epithelial cells and can be used in the diagnosis of thyroid function. The normal reference range is typically 5–40 μg/L. A value below 0.90 μg/L is significantly lower than the normal range and is generally considered abnormal.
A thyroglobulin antibody level below 0.90 μg/L may indicate congenital hypothyroidism or partial loss of thyroid tissue following surgical removal for thyroid cancer, leading to hypothyroid symptoms. Since thyroid hormones secreted by the thyroid gland are crucial components of the body's endocrine system, if this condition affects the patient's daily life—such as causing reproductive dysfunction or delayed growth and development—thyroid hormone replacement therapy with medications such as thyroid tablets or levothyroxine sodium should be initiated promptly under medical supervision.
It is recommended to regularly monitor relevant health indicators in daily life and avoid engaging in overly strenuous physical activities.