MMA breath test (VIDEO) NIH/National Human Genome Research Institute This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Breath test for methylmalonic acidemia measures disease severity and success of liver transplantation for patients. Credit Ernesto del Aguila III, NHGRI Usage Restrictions Please provide appropriate 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.