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TSH levels below 0.4mU/L indicate 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.
This study evaluates the risk of death associated with levels of TSH in the normal range. Some clinical studies have shown an increased risk of heart disease and death in patients with hypothyroidism.
Normal thyroid-stimulating hormone (TSH) levels generally fall between 0.4 and 4.5 milliunits per liter (mU/L). TSH levels higher than 4.5 mU/L usually indicate an underactive thyroid (hypothyroidism), and low TSH levels—below 0.4 mU/L—indicate an overactive thyroid (hyperthyroidism).
In most cases, irregular thyroid-stimulating hormone (TSH) levels mean there’s an issue with your thyroid — it’s either producing too much thyroid hormone or too little. The good news is that your thyroid hormone levels, and TSH levels, can be corrected with treatment and medication.
If the results show that TSH is high and T-4 is low, then the diagnosis is hypothyroidism. In some cases, the thyroid hormone T-3 may be measured as well. If the second test shows high TSH but T-4 and T-3 are in the standard range, then the diagnosis is a condition called subclinical hypothyroidism.
Your TSH level is generally considered low when it falls below 0.4 mUI/mL. TSH levels fall when there is an excess amount of thyroid hormones in your blood, a condition known as...
Low TSH levels indicate a condition with your pituitary or thyroid glands. Learn what happens when TSH is low, how it is diagnosed, and how doctors treat it. High thyroid-stimulating hormone (TSH) levels are associated with hypothyroidism, and one of the signs of hypothyroidism is weight gain.
High levels of TSH (thyroid stimulating hormone) usually indicate hypothyroidism. TSH levels typically fall between 0.4 and 4.0 milli-international units per liter.
Your TSH level may be high or low even when your thyroid gland is healthy. For example, the following can affect your TSH level: Some serious illnesses (that are not related to your thyroid) may cause a lower TSH level for a short time.
Generally, an abnormally low TSH level indicates hyperthyroidism. The purpose of TSH is to stimulate the thyroid gland to produce thyroid hormones (T3 and T4). In hyperthyroidism, the thyroid...