Your thyroid-stimulating hormone (TSH) levels are important for many bodily functions, like your metabolism, weight management, body temperature regulation, and muscle strength. TSH levels that are ...

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 ...

Accurately diagnosing thyroid function is critical to avoid harms of unnecessary treatment. This study found that age-, sex-, and race-specific reference intervals reclassified nearly half of patients ...