High TSH levels indicatethat a person has an underactive thyroid, meaning it is not producing enough essential hormones. Symptoms of hypothyroidism include fatigue, weight gain, and thinning hair. See more
TSH levels below 0.4mU/Lindicate hyperthyroidism, while levels of about 4.0mU/L and above indicate hypothyroidism. The further the result from these levels, the more severe the result is. See more
TSH levels rise abruptly to 60–80 mU/L within 30–60 minutes after delivery in healthy-term babies. This increase relates to exposing the infant to a colder environment and clamping of the umbilical cord. The serum TSH concentration then decreases rapidly to … See more
WEBMar 28, 2023 · Normal thyroid-stimulating hormone (TSH) levels generally fall between 0.4 and 4.0 milliunits per liter (mU/L). TSH levels higher than 4.5 mU/L usually indicate …
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