T4&TSH

A higher than normal level of T4 may be due to conditions that involve an overactive thyroid, including: Graves disease. Taking too much thyroid hormone medicine. Thyroiditis. Toxic goiter or toxic thyroid nodules

TSH stands for thyroid stimulating hormone. A TSH test is a blood test that measures this hormone. TSH levels that are too high or too low may be a sign of a thyroid problem. The thyroid is a small, butterfly-shaped gland in the front of your neck. Your thyroid makes hormones that control how your body uses energy.