Thyroxine (T4) is the main hormone your thyroid makes. Your thyroid hormones are important because they control how your body uses energy from the food you eat. (Photo Credit: iStock/Getty Images) T4 ...

Thyroid blood tests help figure out how well your thyroid gland is working. TSH helps the thyroid gland know when to make ...

This article was originally featured on The Conversation. Your blood serves numerous roles to maintain your health. To carry out these functions, blood contains a multitude of components, including ...

Researchers have known for decades that different brands of lab machines produce different results. The fix is easy — but not ...

High-dose biotin can interfere with thyroid lab tests, leading to misleading results even when your thyroid is healthy, says Luke Coutinho.

Dr. Omar Al-Heeti is an assistant professor of medicine at Southern Illinois University and practices internal medicine with a specialty in infectious diseases. He received his medical degree from the ...

Thyroid function test abnormalities in pregnancy, including those at subclinical levels, are linked to a higher risk of preterm birth, according to a new meta-analysis. However, there is no evidence, ...