Select a letter to locate a diagnostic test.
The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) conducts, supports, and coordinates research on many of the most serious diseases affecting public health. The NIDDK cannot provide medical advice for individuals. The information provided here is informed by NIDDK research, reviewed by doctors, and provided to help you understand more about the diseases and conditions you or your loved ones may face. The NIDDK is part of the National Institutes of Health, the medical research agency of the United States.