
Does Low Thyroid Cause Increased Glucosylated Hemoglobin A1c?

hypothyroidism may worsen glucose control
Detailed Answer:
Hello,
the facts are:
- hypothyroidism may worsen glucose control
- although the increased glucosylated hemoglobin A1c is not quite normal, it's not enough to diagnose diabetes, particularly at the level of 6%
If your hypothyroidism is more than mild (TSH>10 and symptoms of hypothyroidism) then I would definitely recommend waiting for 2-3 months and doing an oral glucose tolerance test (OGTT) later. 6% is not high enough to start treatment right away. You can try various measures first like increasing physical activity and reducing your body weight.
If you only have a mild hypothyroidism then you can do the OGTT right now. The recommended OGTT consists of two measurements of blood glucose. The first one is the fasting glucose. Then you'll have to consume 75gr of glucose and another measurement has to be taken two hours later. Three days of increased carbohydrate consumption has to precede the test in order to have accurate results.
I hope you find my comments helpful!
You can contact me again, if you'd like any clarification or further information.
Kind Regards!

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