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

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 …

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).

TSH stands for thyroid-stimulating hormone. A TSH blood test checks your TSH level. If it’s too high or too low, it may be a sign of a thyroid problem.

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.

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.

Sep 5, 2023 · A high TSH level indicates that the thyroid gland is not making enough thyroid hormone (primary hypothyroidism). The opposite situation, in which the TSH level is low, …

A thyroid-stimulating hormone (TSH) test is one of several blood tests used to check for thyroid gland problems. TSH causes the thyroid gland to make other important hormones that help …

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.

The new generation of ultrasensitive TSH immunoassays have provided a far more effective diagnostic separation of thyrotoxicosis from euthyroidism. This assay has a sensitivity of 0.004 …