Xpert MTB/RIF Assay (IMAGE) The Journal of Visualized Experiments Caption A lab technician from the University of Bern demonstrates the protocol for using the Xpert MTB/RIF assay to diagnose tuberculosis. Credit © Journal of Visualized Experiments Usage Restrictions Image may only be used with 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.