Which term describes the degree of microbial contamination?

• A. Contaminated
• B. Bioburden
• C. Sterilization
• D. Antisepsis

Answer: (B)

The concept being tested is how we describe how much microbial contamination an item carries. Bioburden is the term that describes the total number of viable microorganisms on an object or surface before any decontamination. It’s a measure of the microbial load, often expressed in units like colony-forming units per gram or per square centimeter, and it helps determine how stringent a sterilization step needs to be.

This distinguishes bioburden from other ideas: being contaminated is only a state of presence, not a quantified load; sterilization is the process aimed at eliminating microbes; antisepsis refers to reducing microbial counts on living tissue. Because bioburden specifically captures the amount of microbial contamination, it’s the best term for describing the degree of contamination.