A T4 blood test is used to check your thyroid function. It stands for thyroxine, which is a hormone made by the hormone glands. Learn about how the test works today.

T4 levels are the amount of a hormone called thyroxine, which helps regulate metabolism. Learn more about T4 levels and how they can change here.

Thyroid blood tests are an important part of diagnosing and treating thyroid disease. Based on how high or low the different values are—including key hormones such as TSH and T4—the lab can ...

Numerous blood panels test specific aspects of your health, including looking at the cellular components of your blood, biomarkers of kidney and liver function and more.

Your doctor may want you to get an antithyroglobulin antibody test. Find out what it is and why you need it.

The 3 blood tests your doctor never orders but should and these overlooked lab tests could reveal critical health issues ...

At-home tests can make monitoring hormone imbalances easier. Here, we look at male and female hormone tests, fertility tests, and more. Learn more.

Thyroid function tests are a series of blood tests used to measure how well your thyroid gland is working. Available tests include the T3, T3RU, T4, and TSH.

Testing your thyroid levels at home is a convenient first-step in learning how your thyroid is functioning. Learn more and see our top picks.

A blood test can detect various health problems, including some of the causes that lead to frequent acne. Here’s an understanding of how it works and when to get the test.

Understanding what common blood tests are intended to measure can help you better interpret the results. If you have results from a recent blood test handy, please follow along.