Masked and Modified Mycotoxins in Indoor Environments

Mycotoxins are chemical compounds, not living organisms. Accordingly, claims such as destroy, neutralize, denature, or render inert require chemical and exposure-aligned substantiation rather than organism control logic. Substantiation should demonstrate reduction of the parent mycotoxin to below the stated method reporting limit within the claim-relevant domain, with reporting basis specified as LOD or LOQ. When transformation is claimed, resulting products require identification and evaluation of toxicological relevance for the specified exposure route. Rendered inert is not an analytical finding by itself. It implies a toxicology conclusion and requires endpoint-relevant evidence tied to the claimed exposure route, supported by identification of transformation products and evidence they do not retain toxicologically relevant activity at plausible exposure conditions.

Indoor mycotoxin assessment can be conceptualized across three analytically distinct domains: the Airborne Domain, the Dust Reservoir Domain, and the Surface Domain. These domains are complementary but not interchangeable. This technical white paper clarifies terminology, distinguishes structural modification from detoxification, and presents a domain-aligned framework for evaluating post-treatment claims, including common post-treatment defenses involving modified toxin explanations and immunoassay interference assertions.