The thyroid-stimulating hormone (TSH) test measures the amount of TSH in the blood to convey how well a person’s thyroid functions. Normal levels are typically 0.4 to 4.0 milliunits per liter (mU/L) ...

Borderline thyroid results can sound alarming but they don't always mean you need treatment. Here's what those numbers really ...

Thyroid-stimulating hormones (TSH) help regulate your body’s production of thyroid hormone. High TSH levels mean your thyroid is underperforming, while low levels mean you’re producing too much. Your ...

Thyroxine (T4) levels differ from person to person but usually exist within a consistent range. Abnormal T4 levels can lead to various symptoms and complications, including mental health and digestive ...

Please provide your email address to receive an email when new articles are posted on . Researchers created thyroid function reference ranges adjusted for age, sex and racial-ethnic background. Using ...

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 ...