Serum Thyroglobulin

Serum thyroglobulin is a protein produced by the thyroid gland, which is located in the neck and regulates hormones related to metabolism. Measuring its level in blood helps doctors monitor thyroid health, especially after thyroid cancer treatment or removal. Elevated thyroglobulin can indicate remaining or returning thyroid cancer cells, while low levels generally suggest no evidence of disease. However, other factors can influence its levels, so it is used alongside other tests to assess thyroid health and detect potential issues.