Healthcare Sterile Processing Association (HSPA) Certification Practice Exam 2026 – Your All-in-One Guide to Exam Success!

Disinfection is the process of destroying or inactivating most microorganisms on a surface or in a substance, but it does not achieve the level of sterility that is required for items used in sterile environments, such as surgical instruments. Sterilization, in contrast, is the complete elimination of all forms of microbial life, including spores.

Steam sterilization, cold sterilization, and gas sterilization are all methods designed to achieve this complete elimination of microorganisms. Steam sterilization utilizes high-pressure steam to destroy pathogens, cold sterilization often involves the use of chemical solutions to sterilize instruments at lower temperatures, and gas sterilization typically uses ethylene oxide or other gases to decontaminate heat-sensitive items. In clinical and healthcare settings, distinguishing between disinfection and sterilization is crucial for ensuring patient safety and infection control.