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Thyroid Cancer, Nodules & Hyperthyroidism (Expert Forum)
Thyroglobulin
Answered by
Mark Lupo, M.D. - Thyroid Nodules, Thyroid Cancer, hyperthyroidism, hypothyroidism, Thyroid Ultrasound
Thyroid & Endocrine Center of Florida
Sarasota - FL
Questions in the Thyroid forum are answered by Mark Lupo, MD. Topics covered include Goiter, Graves Disease, Hyperthyroid, Parathyroid/Calcium Problems, Thyroid Cancer, Thyroid Nodules/Cysts, Thyroiditis, Thyroid & Pregnancy, Thyroid Stimulating Hormone (TSH), Thyroid Tests, and Thyroid Surgery.
Thyroglobulin
by shmaners, Dec 27, 2007 08:35AM
After my TT, the radiologist made an error and didn't give me the proper dose of RAI. I'm in the 6 month waiting period to see if I will need another treatment. My previous endo said the thyroglobulin would be the indicator as to whether or not I'd need a second treatment. On 9/28 (four weeks post RAI, before starting levothyroxin (levothyroxine)) my labs were:
Thyroglobulin 31 ng/ml
TSH 76.48
FT4 <0.15.
Today I got my next labwork back and my levels are now
Thyroglobulin 0.4
TSH 0.10
FT4 1.2
I'm not sure if these are 'good' results or not? I'm also curious as to all the controversy regarding synthroid vs. generic. I'm on levothyroxin (levothyroxine), but am wondering if I should request synthroid? I've only been on it for about 2 months...I don't have a chance to see my new endo until March, so I'm just looking for any feedback. Thanks!
Thyroglobulin 31 ng/ml
TSH 76.48
FT4 <0.15.
Today I got my next labwork back and my levels are now
Thyroglobulin 0.4
TSH 0.10
FT4 1.2
I'm not sure if these are 'good' results or not? I'm also curious as to all the controversy regarding synthroid vs. generic. I'm on levothyroxin (levothyroxine), but am wondering if I should request synthroid? I've only been on it for about 2 months...I don't have a chance to see my new endo until March, so I'm just looking for any feedback. Thanks!
Doctor's Answer
by Mark Lupo, M.D., Dec 30, 2007 03:30AM
, Dec 30, 2007 03:30AM
It is difficult to determine at this point but the Tg of 0.4 with suppressed tsh of 0.1 suggests there is some thyroid tissue remaining but cannot tell difference between cancer and benign. Depending on the stage of the initial cancer, a low dose of RAI may have been enough and then simply follow Tg levels and neck ultrasound. If there is trend upwards in Tg, then more treatment may be needed.
I prefer consistency with thyroid meds and the best way to ensure this is using a brand.
I prefer consistency with thyroid meds and the best way to ensure this is using a brand.
http://www.thyroid.org.au/ThySoc/ThySocReplce.html
Regarding thyroglobulin check out
http://www.thyca.org/thyroglobulin.htm