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  • female
  • 30 Years
  • 31/03/2021

What is a normal TSH level for a pregnant woman?

Doctor 1

Answered by 1 Apollo Doctors

The new recommendations for TSH levels during pregnancy are the following: First trimester: less than 2.5 with a range of 0.1-2.5. Second trimester: 0.2-3.0. Third trimester.

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Consult a Endocrinologist

Answered 04/07/2025

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I'm pregnant and just found out my TSH level is 3.59. My gynecologist recommended starting thyroid medication, and I'm not sure if that's normal for this TSH level. Should I be worried or is this standard practice?

In pregnancy, it is recommended to maintain TSH levels below 2.5 for the health of both the mother and the baby. Since your TSH level is slightly elevated at 3.59, your gynecologist's recommendation to start thyroid medication is appropriate. The medication commonly prescribed for hypothyroidism during pregnancy is Levothyroxine. The typical starting dose for hypothyroidism in pregnancy is around 50-100 mcg per day, but the exact dosage will depend on your individual health situation. It is important to follow your doctor's advice and regularly monitor your TSH levels throughout your pregnancy.

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Metformin can cause short-term side effects like stomach discomfort. The most serious of these is lactic acidosis, a condition caused by buildup of lactic acid in the blood. This can occur if too much metformin accumulates in the blood due to chronic or acute (e.g. dehydration) kidney problems. Generally, though, metformin is considered to be a safe and effective treatment for type 2 diabetes and prediabetes.

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My mom is 52 and both lobes of her thyroid are enlarged, extending into the supraclavicular space with possible retrosternal extension on the left side. The right lobe measures 4.6x1.8x1.5 cm and the left is 6.1x4.2x4.0 cm. The largest nodule is 1.7x1.5 cm in the right lobe and 3.0x2.5 cm in the left. Can this be treated with medicines or does she need surgery?

surgery opinion is advised to the patient.

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