Certified Instrument Specialist (CIS) 2025 Practice Exam – 400 Free Practice Questions to Pass the Exam

The identification of organic material in surgical instruments involves understanding the composition of substances derived from living organisms. Organic material is primarily composed of carbon-based molecules, which are essential to life, including proteins, lipids, carbohydrates, and nucleic acids.

In the context of surgical instruments, any organic material encountered typically comes from biological sources, such as blood, tissue residue, or biofilms that can form on instruments used in medical settings. These substances inherently contain carbon and usually also include hydrogen and oxygen.

This is why recognizing that organic material includes carbon, hydrogen, and oxygen compounds specifically from living organisms is crucial. This knowledge is essential for effective cleaning and sterilization processes in healthcare settings, ensuring that all biological residues are properly addressed to maintain hygiene and prevent infection.

Other options, while they may contain relevant components related to surgical settings, do not directly address the organic nature of residues found on surgical instruments stemming from biological sources.