TSH stands for thyroid stimulating hormone. A TSH test is a blood test that measures this

hormone. The thyroid is a small, butterfly-shaped gland located near your throat. Your

thyroid makes hormones that regulate the way your body uses energy. It also plays an

important role in regulating your weight, body temperature, muscle strength, and even your

mood. TSH is made in a gland in the brain called the pituitary. When thyroid levels in your

body are low, the pituitary gland makes more TSH. When thyroid levels are high, the

pituitary gland makes less TSH. TSH levels that are too high or too low can indicate your

thyroid isn't working correctly.TSH normal values are 0.5 to 5.0 mIU/L