Apr 22, 2025 · This article describes the TSH test and its results. We also discuss what high and low TSH levels indicate and available treatments.

Thyroid-stimulating hormone (TSH) triggers your thyroid to release its hormones, which mainly impact your body’s metabolism. High TSH levels usually indicate hypothyroidism, and low TSH levels …

Dec 10, 2025 · Learn how TSH levels indicate thyroid health. High TSH suggests an underactive thyroid; low levels point to overactivity.

Oct 30, 2025 · A doctor can test your TSH levels with a blood test to diagnose thyroid disease. Normal TSH levels range from 0.4-4.0 mUI/mL, which indicates proper thyroid function.

Your TSH test results can tell you if your thyroid is making too much or too little hormones. But the test can't explain why your TSH levels may be too high or too low.

Nov 22, 2025 · A TSH test is done to find out if your thyroid gland is working the way it should. It can tell you if your thyroid gland is overactive (hyperthyroidism) or underactive (hypothyroidism).

Aug 4, 2025 · Your thyroid labs say "normal" but you feel awful? Learn what TSH, T3, T4 numbers really mean and when to push for better testing.

Aug 24, 2025 · Decipher your TSH blood test results with this guide. Learn what high or low TSH means for your thyroid health and next steps.

Aug 8, 2025 · Most labs consider a TSH level between 0.4 and 4.0 mIU/L to be normal, though some experts prefer 0.3–2.0 mIU/L. Knowing this helps answer what is thyroid disease and how it’s …

Mar 24, 2022 · Your thyroid-stimulating hormone (TSH) levels can indicate how well your thyroid gland is working. A normal TSH level generally falls between 0.35 and 4.5 milli-international units per liter …