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Thyroid (Expert Forum)
Low TSH, low ft3 and high fT4
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 Dr. Mark Lupo. Topics covered include goiter, graves disease, Hashimoto's thyroiditis, hyperthyroid, hypothyroid, thyroid cancers, thyroiditis, and thyroid stimulating hormone (TSH).
Low TSH, low ft3 and high fT4
by Krystyne, Jul 22, 2008 02:16PM
What does it mean when you have a low TSH level (below the normal range) so it is considered hyperthyroidism and yet your fT3 levels remain low (always below the range) but the fT4 no matter with an increase or decrease in Levothyroxin it remains always around 11.00. I currently take 125mcg of levothyroxin which has been steadily increased to raise the fT3 but with no success at all. Now my TSH is considred hyper, while like I said above my fT3 remains below the range and fT4 remains always around 11.00. I unfortunately live overseas and the endocronologist tells me the only medicine they use here is levothyroxin, so really I am out of sources as to what I can do for myself to raise my fT3 and have my TSH in the normal range. I would like to experience less symptoms and just feel good. What can I do?
Doctor's Answer
by Mark Lupo, M.D., Jul 23, 2008 06:00AM
, Jul 23, 2008 06:00AM
In these cases sometimes some T3 (cytomel) can be useful but not always. Testing for adrenal insufficiency may be reasonable depending on your symptoms. If the FT3 is only slightly low, it is not likely making a clinical impact. Keeping TSH from being too low is important to avoid bone loss and heart stimulation.
Member Comments (2)
by gina_medhelp, Aug 01, 2008 01:27PM
i have similar labs. i sent you a note/msg.
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