OverviewThe sweat electrolyte test is a test that measures the level of chloride in sweat. In children, increased sodium and chloride concentrations in sweat can indicate cystic fibrosis, an inherited disease that affects the respiratory and digestive system.
Update Date 4/21/2015
Updated by: Neil K. Kaneshiro, MD, MHA, clinical assistant professor of Pediatrics, 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.