Which statement best describes mold testing?

• A. Can determine if the potential for unwarranted exposures are occurring by making comparisons
• B. It can detect all mold species in a building
• C. It measures humidity levels
• D. It replaces visual inspection

Answer: (A)

Mold testing is about evaluating exposure potential by comparing indoor mold concentrations to reference levels, such as outdoor air or a baseline. When indoor results are higher than outdoor or a prior measurement, it suggests there may be an indoor source contributing to potential exposure. This approach helps distinguish true indoor growth from background levels, rather than simply confirming that some mold is present. Keep in mind that testing doesn’t detect every mold species in a building, and humidity is measured with separate tools like hygrometers. It also doesn’t replace a visual inspection, which identifies visible growth and moisture sources.