2. Why didn't my doctor check my thyroglobulin level before removing my thyroid?
Your thyroglobulin (Tg) level may or may not be measured before your thyroid gland is removed as part of the treatment for thyroid cancer. Since the protein is produced by normal thyroid tissue as well as by many thyroid cancers and can be elevated with many thyroid conditions, it can be difficult to determine whether an increased thyroglobulin is due to the cancer.
4. Can thyroglobulin testing be performed in my doctor's office?
No, it requires specialized equipment to perform. The test may not be offered in every laboratory and may need to be sent to a reference laboratory. Due to certain technical limitations of the assay, normal reference ranges can vary greatly. Thus, when serial thyroglobulin levels are required, they should be performed at the same laboratory.
This article was last reviewed on October 22, 2013. | This article was last modified on June 6, 2016.
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