Verywell Health on MSN1y
TSH Levels Test: What Do High and Low Levels Mean?TSH levels higher than 4.5 mU/L usually indicate an underactive thyroid (hypothyroidism), and low TSH levels—below 0.4 ...
thyroid insufficiency caused by low iodine intake (of the mother and the child); primary maternal thyroid insufficiency with a higher than normal serum TSH concentration; and isolated low free T 4 ...
Thyroid cancer recurrence risk was not elevated among patients with high-normal vs low-normal exposure to TSH following thyroidectomy.
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