Why the test is performed: This test is typically performed on infants and children to identify human growth hormone (hGH) deficiency as a cause of growth retardation. It is also useful in detecting a pituitary tumor.
Update Date 2/3/2016
Updated by: Brent Wisse, MD, Associate Professor of Medicine, Division of Metabolism, Endocrinology & Nutrition, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.