what are normal tsh lab values?
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The normal range of TSH levels is 0.4 to 4.0 milli-international units per liter. If you're already being treated for a thyroid disorder, the normal range is 0.5 to 3.0 milli-international units per liter. A value above the normal range usually indicates that the thyroid is underactive. This indicates hypothyroidism.
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It's often the most sensitive indicator that a thyroid problem is present. The normal range of TSH levels in adults is between 0.4 to 4.0 mIU/L (milli-international units per liter). Some research suggests that this range should actually be more like 0.45 to 2.5 mIU/L.
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It is known that TSH levels may also increase with age, even in those without thyroid disease. In addition, recent reports suggest that living longer may be associated with higher TSH levels, further advancing the possibility that a mildly elevated TSH may be normal and even beneficial in certain elderly patients.
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The test, called a thyroid function test, looks at levels of thyroid-stimulating hormone (TSH) and thyroxine (T4) in the blood. Doctors may refer to this as "free" T4 (FT4). A high level of TSH and a low level of T4 in the blood could mean you have an underactive thyroid.
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Dr. Barnes found that a normal resting body temp should be between 97.8-98.2 degrees Fahrenheit. If it is consistently lower, then there is a trend toward a hypothyroid (decreased function) pattern. If consistently above 98.2, then this indicates a trend for more of a hyperthyroid (increased function) presentation.
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Today's TSH tests are very accurate and sensitive; they can help diagnose even the mildest cases of hypothyroidism. It's important to understand that just because your TSH test comes back normal, it does not rule out the possibility of you being hypothyroid.
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High TSH levels indicate hypothyroidism. fatigue. weight gain. swelling of the face and neck. increased sensitivity to cold temperatures.
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Blood tests that measure thyroxine and thyroid-stimulating hormone (TSH) can confirm the diagnosis. High levels of thyroxine and low or nonexistent amounts of TSH indicate an overactive thyroid. The amount of TSH is important because it's the hormone that signals your thyroid gland to produce more thyroxine.
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Thyroid-stimulating hormone (TSH) produced by the pituitary will be decreased in hyperthyroidism. Thus, the diagnosis of hyperthyroidism is nearly always associated with a low (suppressed) TSH level. If the TSH levels are not low, then other tests must be run. Thyroid hormones themselves (T3, T4) will be increased.
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Low TSH levels indicate hyperthyroidism. If the thyroid gland is secreting levels of hormones that are too high, the pituitary gland produces less TSH.
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ARMOUR THYROID Rx. Thyroid 15mg (¼ grain), 30mg (½ grain), 60mg (1 grain), 90mg (1 + ½ grain), 120mg (2 grains), 180mg (3 grains)+, 240mg (4 grains), 300mg (5 grains)+; tabs; +scored. Each grain of thyroid contains liothyronine (T3) 9mcg and levothyroxine (T4) 38mcg.
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Levels of TSH, which is made by the pituitary gland, may be high if the thyroid is not making enough hormones. This information can be used to help choose which imaging tests (such as ultrasound or radioiodine scans) to use to look at a thyroid nodule. The TSH level is usually normal in thyroid cancer.
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Testing TSH Levels If you have Graves' disease, your thyroid-stimulating hormone (TSH) level will probably be very low because the pituitary gland will try to compensate for the excess T3 and T4 hormones in the blood. It'll stop producing TSH in an attempt to stop production of the thyroid hormones.
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Abnormally high test results Elevated T4 levels may indicate hyperthyroidism. They may also indicate other thyroid problems, such as thyroiditis or toxic multinodular goiter. Other reasons for abnormal results may include: high levels of protein in the blood.
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The commonest cause of this pattern is sick euthyroid syndrome. A TSH level between 10-16 miu/L indicates hypothyroidism, and usually indicates that replacement therapy should be commenced. A TSH level between 6-12 miu/L with normal T4 may represent subclinical or compensated hypothyroidism.
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If the TSH is less than 0.1 and the free T4 is elevated, you probably have a hyperthyroid child, but even in early/mild hyperthyroidism, the TSH is invariably less than 0.1 and often less than 0.01. A low TSH is also not indicative of pituitary TSH deficiency.
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TSH: thyroid stimulating hormone — produced by the pituitary gland that regulates thyroid function; also the best screening test to determine if the thyroid is functioning normally. Miscarriage: this occurs when a baby dies in the first few months of a pregnancy, usually before 22 weeks of pregnancy.