Objective To establish a real-time fl uorescence loop-mediated isothermal amplifi cation(LAMP)for the detection of New Delhi metallo-beta-lactamase-1(NDM-1)-positive bacteria. Methods According to the sequence of NDM-1 gene,4 primers and fl uorescent dye concentration of SYTO-9 were designed and optimized,and the limit of detection and specifi city were also evaluated. A total of 72 isolates of multidrug-resistant Acinetobacter baumannii were detected. Results The optimal fl uorescent dye concentration of t...