Thyroid-stimulating hormone (TSH) activates the thyroid gland; thyroid hormones in turn influence the ovaries. For women who are trying to conceive, other normal ranges therefore apply than usual.
A TSH value above 2.5 μU/ml can make it more difficult to become pregnant or promote a miscarriage.
A TSH value above the normal range may indicate hypothyroidism, and a TSH value below the normal range may indicate hyperthyroidism. An abnormal TSH value can also be due to an autoimmune thyroid disease, Graves’ disease or an autonomous thyroid (not controlled by the pituitary gland).
This article has been verified by a medical professional
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