Fifth Affiliated Hospital of Zhengzhou University 1 article published in JoVE Immunology and Infection Quantitative Polymerase Chain Reaction (qPCR)-Based Rapid Diagnosis of Helicobacter pylori Infection and Antibiotic Resistance Liang Wang*1,2,3, Jin-Xin Lai*1, Yu-Ting Si*1,4, Xu-Xia Cui1,4, Zeeshan Umar1,5, Xiao-Jun Ru1, Xin-Yu Zhang1, Zheng-Kang Li1, Alfred Chin Yen Tay5,6,7,8, Barry J. Marshall5,6,7,8, Guang-Hua Li1, Bing Gu1 1Laboratory Medicine, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, 2Division of Microbiology and Immunology, School of Biomedical Sciences, The University of Western Australia, 3Center for Precision Health, School of Medical and Health Sciences, Edith Cowan University, 4Medical Technology School of Xuzhou Medical University, 5Marshall Laboratory of Biomedical Engineering, School of Medicine, Shenzhen University, 6The Marshall Centre for Infectious Diseases Research and Training, The University of Western Australia, 7Marshall International Digestive Diseases Hospital, Zhengzhou University, 8Marshall Medical Research Center, Fifth Affiliated Hospital of Zhengzhou University The protocol presents a noninvasive method for the rapid diagnosis of Helicobacter pylori stomach infections through the string test and determines its antibiotic resistance to clarithromycin and levofloxacin using quantitative polymerase chain reaction (qPCR).