What does an elevated immunoglobulin after thyroidectomy indicate?

Elevated immunoglobulins following thyroidectomy often indicate Hashimoto's thyroiditis.

Hashimoto's thyroiditis is frequently linked with elevated levels of immunoglobulins, especially anti-thyroglobulin and anti-thyroid peroxidase antibodies. These antibodies are directed against the thyroid gland's constituent proteins. Their elevation indicates an autoimmune response against the thyroid, resulting in chronic inflammation known as Hashimoto's thyroiditis.