A rapid test is a diagnostic tool designed to detect the presence of specific substances or organisms quickly and easily, often providing results within minutes. In the dairy industry, rapid tests are commonly used to detect antibiotic residues (e.g., Beta-lactams, Tetracyclines) in milk. These tests typically use immunochromatographic technology (like dipsticks or test strips) and are valued for their simplicity, speed, and reliability, making them ideal for on-site testing without the need for specialized equipment.