Certified Instrument Specialist (CIS) Practice Exam 2026 - Free CIS Practice Questions and Study Guide

Pyrogens are substances that induce fever as a part of the body's immune response. They can be produced by the body in response to infection or inflammation, or they can come from external sources, such as bacteria and viruses. When pyrogens enter the bloodstream, they signal the hypothalamus in the brain to raise the body's set point temperature, leading to fever, which can be beneficial as it helps the body fight off infections and enhances the immune response. Understanding the role of pyrogens is crucial in various medical and scientific contexts, particularly in understanding immune responses and managing fever in clinical settings.