Antimicrobial susceptibility refers to the ability of a microorganism, such as bacteria or fungi, to be inhibited or killed by an antimicrobial agent, like antibiotics or antifungals. Testing for susceptibility helps determine which medications are effective against specific pathogens, guiding healthcare providers in choosing the right treatment for infections. The results of antimicrobial susceptibility tests are crucial for managing infections and preventing the spread of resistant strains. When a microorganism shows resistance, it means that standard treatments may not work, leading to more severe health issues and complications. Understanding susceptibility patterns is essential for effective infection control and public health.