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Thyroid Cancer, Nodules & Hyperthyroidism (Expert Forum)
5 weeks pregancy with very low TSH
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.
5 weeks pregancy with very low TSH
by DummyMom, Jun 27, 2009 12:27PM
I'm 37 years old and ~4 to 5 weeks pregnant. This is my first time pregnancy. I have a low TSH ~0.06mU/L 4 weeks ago and the latest blood test (4 days ago) shows low TSH again at 0.06mU/L, T3 Free 8.1 pmol/L and T4 Free 28.4 pmol/L. Am I seriously Hyperthroidism? Does it affect the health & IQ of my baby? Do I need to take any medicine? Still waiting for my family doctor referral for a endocrinologist ... seems I can't do anything but waiting :( Should I avoid fish & seaweed at the mean time? Can ultrasound detect the throyid problem on my baby? When should I do my ultrasound? I' so worried, please help.
DummyMom
DummyMom
Doctor's Answer
by Mark Lupo, M.D., Jun 28, 2009 09:11AM
, Jun 28, 2009 09:11AM
The low TSH may be due to the pregnancy and usually improves on its own without treatment. However it does require evaluation. You did not mention reference ranges for the T4 and T3 -- if these are high, then it is more likely true hyperthyroidism which would need evaluation and possible treatment.
Would see an endocrinologist (thyroid specialist) to determine if there is any true thyroid problem (more blood tests and possible ultrasound) or if this is low TSH we commonly see in the first trimester of pregnancy.
Would see an endocrinologist (thyroid specialist) to determine if there is any true thyroid problem (more blood tests and possible ultrasound) or if this is low TSH we commonly see in the first trimester of pregnancy.
DummyMom
it is normal to have low TSH early in pregnancy.
But your doctor should be testing FT3 and Ft4, as mentioned above, to see if it really is hyperthyroid.
Probably just needs monitoring and no treatment required.
Best wishes