Disclaimers
Foundation & Decision-Making in Mold Testing
Gravity Plates (Petri Dish Tests)
Surface Sampling (Swabs and Tape Lifts)
Air Sampling (Spore Trap Cassettes)
DNA-Based Dust Testing (ERMI, HERTSMI-2, Fungi 10)
Advanced and Specialized Testing (VOC, Mycotoxin, Endotoxin, Actinomycetes)
Interpreting Results and What to Do Next
When your lab report arrives, it will list the type of mold found and often note whether it was abundant, moderate, or trace. In many cases, the result will list the genus only. However, if the swab was cultured, the lab may be able to identify mold to the species level.
If mold is found:
- On drywall, wood framing, or structural surfaces: This may indicate an underlying moisture problem. Inspection or remediation may be needed.
- On furniture or contents: Consider whether the item is essential, cleanable, or better discarded. Fine particle cleaning may help if mold is on the surface but not deeply embedded.
- In multiple areas or materials: Broader testing may be helpful to understand the full extent of contamination.
If no mold is found:
That’s good news, but not necessarily a final answer. If symptoms or concerns remain, other types of testing—such as air or dust sampling—may still be needed to evaluate airborne or historical exposure.
Surface sampling is best used to confirm visible mold or screen suspect items. If something looks like mold and the lab confirms it, you have the evidence you need to take action.