May 30, 2023 · Thyroid tests tell your healthcare provider how well your thyroid gland works. These tests can help diagnose conditions like hyperthyroidism, hypothyroidism, Graves’ disease, Hashimoto’s …

Sep 5, 2023 · The best way to initially test thyroid function is to measure the TSH level in a blood sample. Changes in TSH can serve as an “early warning system” – often occurring before the actual …

Dec 14, 2025 · Different types of thyroid blood tests may be ordered to see how your thyroid gland is functioning. Learn about why you may need a thyroid blood test, what to expect during the test, and …

Learn about blood and imaging tests used to check how well your thyroid is working and diagnose thyroid diseases, including TSH and T4 tests, and thyroid scans.

May 16, 2025 · If you suspect that you may have a thyroid condition, or know someone who does, this article will go over all of the most helpful tests that can help you identify a thyroid condition.

It's done to detect signs of abnormal enlargement, or nodules, on the thyroid, and to guide biopsies of concerning nodules. Thyroid scans using radioactive iodine or technetium (another radioactive …

Nov 8, 2023 · The thyroid is a gland in your neck that makes hormones. Read about blood and imaging tests that doctors use to diagnose and monitor thyroid diseases.

High levels of the TSH indicate an underactive thyroid. Very low levels indicate an overactive thyroid. Other blood tests may be done as well. These include measuring the levels of the hormones made …

Thyroid function tests are simple blood tests and are currently the most accurate way to diagnose and manage over- or under-activity of the thyroid. Your doctor will interpret the blood test results, together …

Dec 9, 2025 · What is a thyroid function test? A thyroid function test is a blood test that checks your thyroid hormone levels. Your thyroid gland makes triiodothyronine (T3) and thyroxine (T4) hormones. …