The availability of antimicrobials to treat infections is at the heart of modern healthcare. It enables health professionals to safely deliver interventions, such as surgery and chemotherapy, and allows patients to live longer and healthier lives. However antimicrobial resistance (AMR) is developing faster than new antimicrobials can be developed or discovered. Now researchers from the University of California Berkeley have created a simple and inexpensive new test that can diagnose patients with antibiotic-resistant strains of bacteria in only a couple of minutes, an innovation which could help doctors prescribe a specific antibiotic for each infection, limiting the spread of antibiotic resistant organisms.