Mold testing isn’t one-size-fits-all. Depending on your concerns, some tests are better than others. The most effective approach usually starts with general screening and moves toward more specific methods only if needed.

Here’s a quick look at how testing typically progresses:

1. Gravity Plates
   • Capture viable mold spores that settle out of the air
   • Great for general, low-cost screening
2. Surface Sampling (Swab, Tape Lift)
   • Used when there’s visible discoloration or suspected mold growth
3. Air Sampling (Spore Trap Cassettes)
   • Measures airborne mold spores at a moment in time
   • Often used to check for hidden problems or assess HVAC airflow impact
4. Dust Sampling (ERMI, HERTSMI-2)
   • Looks at long-term exposure through settled dust
   • Identifies DNA from mold species, alive or dead

By understanding where you are in this roadmap, you can choose the right test without overspending or skipping essential steps.