Endocrine Abstracts

Background: The ITT has been said to be the gold standard for diagnosing GH deficiency (GHD) for 50 years. The original 0, 20, 30, 60, 90 and 120 min time points are still used in many but a survey of current UK paediatric ITT protocols identified several variations.Objective and hypotheses: To identify optimal GH sampling time points to avoid over diagnosis of GHD.Methods: Results of 502 paediatric ITTs using two different samplin...