Hi
I'm taking 150mg or 200mg thyroxine on alternate days.
Last time I checked with my doctor my Tg was 12 well down from 280 before the operation.
It depends on what type of cancer and the risk for recurrence.
The absence of detectable thyroglobulin in the blood is a good sign that the disease is in remission while an increase in thyroglobulin levels may indicate that the cancer is growing, especially in most types of papillary and follicular disease. So your low thyroglobulin is a good sign, possibily.
Are you or will you be on meds. before RAI? If not perhaps doctor is waiting for your TSH to reach a high enough level to do RAI.
Thyroid cancer cells usually take up only tiny amounts of iodine. High levels of thyroid stimulating hormone TSH, can arouse thyroid cancer cells to take up significant amounts of iodine. So after surgery it is necessary to deplete any remaining thyroid cells of their stores of iodine so that they will greedily soak up all the RAI possible.
One of the reasons for the overall cure rate for thyroid cancer is that RAI is like a magnic with the ability to seek out and find cancerous thyroid cells wherever they are in the body and destroy them. It also can find normal thyroid cells which might have the potential to become cancerous but are not yet and destroy them as well, with little or no damage to other tissues in the body.
The best person to ask though, is your doctor.
GL
My TT is Moday morning, and my oncologist told me the RAI would be 4 weeks after the surgery, barring any complications, and as long as my TSH was >30 by then.
Maybe the endo isnt in a hurry but I would be I personally wanted to make sure there was no chance of the cancer coming back.Of course it is up to you to RaI or not but if it were me I would be bugging that endo till I got my RAI.
let us know how it goes.
Love Venora