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5 Problems with Mold Plate Testing

  1. Not all culture media grow all molds
  2. Fast-growing molds eat all the food before slow-growing molds (Stachybotrys) can grow
  3. Only grows viable (living) spores, not non-viable (dormant) spores
  4. Only traps airborne spores, not sticky ones like Stachybotrys
  5. Give a false sense of confidence that a space is mold-free

I try to stay in my lane as a body expert. But I just have to step out of my lane for a minute.

This must be said!

Mold testing plates are problematic. They are NOT reliable enough to rely upon as a sole method of testing.

I’ve now had the 3rd consultation in a short span of time where a family used mold plates to determine whether their homes were safe, and are now dealing with a severe illness as a result of mold. This time it’s leukemia in a child.

My heart can’t take it anymore!

Please please please do NOT rely upon a mold plate test. If you’re going to use it, make it a part of a comprehensive assessment.

If the mold plate test looks bad, you have more investigation to do.

If the mold plate test looks good, you still may have a mold problem.

ps – Because I know I’m not a building expert, all 5 points have been verified by certified building inspectors, scientists who make the mold plate agar media, and research studies.

Citation:
Birgitte Andersen, Anita Thrane Nissen,
Evaluation of media for detection of Stachybotrys and Chaetomium species associated with water-damaged buildings,
International Biodeterioration & Biodegradation,
Volume 46,
Issue 2,
2000,
Pages 111-116,
ISSN 0964-8305,
https://doi.org/10.1016/S0964-8305(00)00092-5.


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