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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How Can Hyperthyroidism Be Diagnosed?

I am a 69 yr old female, have had a non functioning thyroid for 45 years, no surgery. I have manintained a normal level of TSH with last maybe 10 years prescription of 1.25. Four months ago the blood test result TSH level was 2.09. This month, suddenly the TSH level is 0.114, and T4,Free of 1.61. The PA wants to reduce my Synthroid prescription, saying I am hyperthyroid. I asked about having a T3 test, and she said not until I was on the new prescription. I have no symptoms of hyperthyroidism, no fast heart rate or heart palpitations, shakes, heavy breathing. I think there could be more to the diagnosis, not willing to reduce my prescription. Also, the last 4 months, I have been taking Vitamin E, Biotin, and newly started Vit D supplement, 2000. The blood test shows D-deficient 22. , previous test same. Do you really think I’m hyperthyroid? Do I start the new prescription of 1.125? Thank you.
Wed, 27 Jun 2018
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Internal Medicine Specialist,  's  Response
Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice.

You have a non functioning thyroid and your basic issue is hypothyroidism for which you are taking Synthroid. The most sensitive of the thyroid function tests is TSH which is the hormone coming from your Pituitary gland in response to the Thyroid hormonal level in your body. Your TSH value now is below normal which means that your Thyroid function has become better than before and you require less medicine. So on the basis of the test, you can reduce your Synthroid to 112 microgram ( rose) tablet from 125 microgram ( brown) tablet. You take it every morning on an empty stomach and refrain from food and drink for 1 hour . It would be advisable to have your TSH repeated after a month or so to make sure that the TSH is at the right level.

Hope I have answered your query. Let me know if I can assist you further.
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How Can Hyperthyroidism Be Diagnosed?

Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. You have a non functioning thyroid and your basic issue is hypothyroidism for which you are taking Synthroid. The most sensitive of the thyroid function tests is TSH which is the hormone coming from your Pituitary gland in response to the Thyroid hormonal level in your body. Your TSH value now is below normal which means that your Thyroid function has become better than before and you require less medicine. So on the basis of the test, you can reduce your Synthroid to 112 microgram ( rose) tablet from 125 microgram ( brown) tablet. You take it every morning on an empty stomach and refrain from food and drink for 1 hour . It would be advisable to have your TSH repeated after a month or so to make sure that the TSH is at the right level. Hope I have answered your query. Let me know if I can assist you further.