GH is a hormone produced by the pituitary gland, a small gland located on the floor of the third ventricle in the sella turcica of the body of the sphenoid bone. GH is essential for normal growth and development of a child to promote bone growth according to age. GH testing is mainly used to identify GH hormone deficiency and evaluate pituitary function in the body.

Acromegaly is rare, symptoms change slowly. Early diagnosis is important for appropriate treatment, if treatment is delayed, the patient often has serious complications and worse, death.