Device Prototype (IMAGE) Stanford University Caption A prototype of the handheld ammonia blood detector and associated test strips, developed by researchers at Stanford. Credit Thomas Veltman Usage Restrictions Image may only be used with appropriate caption or credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.