A biofilm is a group of microorganisms that stick together on a surface. They are up to 4,000 times more resistant to medications than individual bacteria. Biofilms are responsible for around 80% of chronic bacterial infections in the US, costing over $200 billion per year. BecSCREEN is an antimicrobial susceptibility test that determines the minimum biofilm eradication concentration to provide insight into treating chronic bacterial infections. It collects samples via swabs of infected areas or urine and tests which antibiotics will effectively treat the infection while minimizing antibiotic usage and promoting faster recovery.