Low thyroglobulin may be caused by inflammation of the thyroid gland or hypothyroidism. Thyroglobulin is an antibody to the body’s thyroid gland. If the level is low, the body is prone to symptoms of immune deficiency and the thyroid gland function will be weakened, and the body will experience symptoms of hypothyroidism. In addition to thyroid system diseases, the internal organs of the body with immune functions can also be damaged, such as hepatitis and liver cirrhosis. The liver itself is the immune system of the human body and is an important place for the production of immune cells. A low level of thyroglobulin in the human body means that the body’s own immunity is reduced and the function of the liver is also reduced, so the liver may develop hepatitis, cirrhosis or even liver cancer. In addition, low thyroglobulin may also be caused by the low level of iodine ions consumed by the body in daily life.