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  1. TSH Levels Decoded and What They Mean - Verywell Health

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

  2. TSH Levels: Low to high ranges, symptoms, and what they mean

    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.

  3. TSH (Thyroid-Stimulating Hormone) Levels: Symptoms

    Jul 25, 2022 · Thyroid-stimulating hormone (TSH) triggers your thyroid to release its hormones. High TSH levels usually indicate hypothyroidism and low levels, hyperthyroidism.

  4. Thyroid-Stimulating Hormone (TSH): TSH Levels Test - WebMD

    Nov 22, 2025 · What Is a TSH (Thyroid Stimulating Hormone) Test? A blood test can check the amount of hormones that your thyroid is making. Many factors can affect these levels. (Photo credit:...

  5. TSH Levels: Normal, Low, and High Ranges - Health

    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.

  6. High TSH Levels: Symptoms, Treatment and Thyroid Causes

    Feb 11, 2025 · Thyroid stimulating hormone, or TSH, is produced by the pituitary gland and helps regulate thyroid hormone levels in the body. Learn the high TSH symptoms, such as fatigue and dry …

  7. Hypothyroidism (underactive thyroid) - Mayo Clinic

    Dec 10, 2022 · It's usually based on the results of blood tests. The first blood test typically done to diagnose hypothyroidism measures the level of thyroid-stimulating hormone (TSH) in the blood. If it's …

  8. TSH (Thyroid-stimulating hormone) Test - MedlinePlus

    TSH stands for thyroid stimulating hormone. Another name for it is thyrotropin. A TSH test is a blood test that measures this hormone. A TSH level that is too high or too low may be a sign of a thyroid …

  9. How to interpret thyroid function tests - PMC

    Commonly, TSH is low normal or partially suppressed, with low or normal free TH. Therefore, it is generally advisable only to check thyroid function in those patients in whom primary disturbance of …

  10. Expected TSH Ranges by Age and During Pregnancy - Healthline

    Oct 3, 2025 · High TSH levels mean your thyroid is underperforming, while low levels mean you’re producing too much. Your pituitary gland produces thyroid-stimulating hormones (TSH), which help …