An individual can determine if his TSH level is high by undergoing a TSH blood test, according to Healthline. Only a health care provider can order and interpret the results of a TSH test.
Thyroid-stimulating hormone, or TSH, is a hormone released by the pituitary gland that tells the thyroid to make and release essential hormones to help control the rate at which the body uses energy, explains Healthline. A normal range of TSH levels is between 0.4 and 4.2 microunits per milliliter, states WebMD. This range is for reference only, as normal values vary from lab to lab.
A high TSH level can indicate hypothyroidism, or in rare cases, a pituitary tumor that is making too much TSH, notes WebMD. Hypothyroidism is often easily treatable with thyroid hormone medication.