I have been diagnosed with papilary thyroid cancer and went for total thyroidectomy on June 20. The surgeon told me that there were no lymph node involvement, the nodule size was 1.3 cm and the cancer stayed within the nodule. My endo wanted to get the thyroglobulin test done. So I did the test after 9 days of TT and the result came back as 16. Is this thyroglobulin number too high? Does this mean the cancer have actually spread to other places? I am scheduled for RAI on August 23rd but I am quite nervous about this number. My surgeon said it has not spread but I am not convinced now. Can someone please shed some light here. What is the half life of thyroglobulin? Is this possible that the level is high because I tested for thyroglobulin too soon. I should have waited longer to get the value close to zero. Please help. Thanks a lot for responding to my thread.
From what I understand it could just be residual TG that soon after the thyroid removal. When they remove the thyroid there is not guarantee that all the thyroid tissue is removed, since it could be on parathyroid gland, nerves, vocal cords. That is the reason for the RAI, to kill the remaining tissue. After the RAI, if the TG is still high there is a cause for concern.
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