Popular guidelines / 14/04/2021

What is a good range for TSH levels?

TSH levels typically fall between 0.4 and 4.0 milliunits per liter (mU/L), according to the American Thyroid Association. Ranges between laboratories will vary with the upper limit generally being between 4 to 5. If your level is higher than this, chances are you have an underactive thyroid.

Is a TSH of 5.8 high?

At Cleveland Clinic labs, 0.4 to 5.5 is considered normal. In the absence of symptoms, and if other thyroid tests are normal, TSH levels between 5.6 and 10 are considered subclinical, a level that indicates possible early-stage disease. A TSH level above 10 indicates a thyroid disorder.

Is a TSH level of 15 normal?

But people who have highly elevated levels (over 15 mU/L) often develop symptomatic overt hypothyroidism within several months or years. One study followed people with high levels of TSH over a period of two to three years. The participants didn’t have any symptoms or diagnosed thyroid disorders.

Which is the best reference range for TSH in children?

The optimal reference range for TSH in newborns, infants and children varies from those of adults. In addition, there are definite differences in optimal free T4 and free T3 levels in children. The most comprehensive anaylsis of thyroid hormone tests of pediatric patients was done in 2008 ( Kapelari, 2008 ).

What does it mean when your TSH is outside the normal range?

TSH values outside of the optimal reference range are suggestive of a thyroid disorder. Values at or near the upper or lower range may suggest a subclinical disorder (or one in which there are no observable symptoms). 1

How are TSH levels determined by blood test?

Your doctor will measure your TSH levels with a blood test. TSH levels are determined by ranges (all figures in mU/L—milliunits per liter). Below are the ranges, according to the American Thyroid Association. However, these numbers are not set in stone. Normal ranges can vary by individual, and they can even change over the course of a day.

What should my TSH level be if I have underactive thyroid?

High Levels of TSH. TSH levels typically fall between 0.4 and 4.0 milliunits per liter (mU/L), according to the American Thyroid Association. Ranges between laboratories will vary with the upper limit being between 4 to 5. If your level is higher than this, chances are you have an underactive thyroid. In general,…

What does a normal TSH reading in the thyroid mean?

A TSH reading in this range indicates the thyroid gland is functioning normally. However, doctors do not all agree on the precise TSH range of a normal-functioning thyroid gland.

What does a TSH level of 0.5 mIU / l mean?

A TSH level below 0.5 mIU/L can mean that your thyroid gland is overactive. This is hyperthyroidism, which can cause such symptoms as unexplained weight loss, heat intolerance, increased appetite, and bulging eyes.

Is the TSH test the gold standard for thyroid disease?

The TSH test is the “gold standard” in diagnosing and monitoring thyroid disease, but as with any medical test, there are exceptions and variations to what the test may mean, as well as situations in which the test may be inaccurate. If your TSH levels don’t seem to reflect how you are feeling, speak up.