ERMI testing may sound technical, but the process is actually very straightforward.
Here’s how it works:
Step 1: Dust Collection
Dust is collected from your home. This usually comes from:
- Floors
- Baseboards
- Window sills
- Other undisturbed areas
This dust contains mold particles that have settled over time.
Step 2: Lab Testing
The dust sample is sent to a laboratory where:
- DNA is extracted from the dust
- PCR testing identifies mold species
- The lab measures the quantity of each mold
Step 3: ERMI Score Calculation
The lab analyzes 36 types of mold and places them into two groups:
Group 1: Molds commonly found in water‑damaged buildings
Group 2: Molds commonly found in normal environments
The lab compares these groups and generates your ERMI score.
Step 4: Results
Results typically arrive in 1–2 weeks and include:
- ERMI score
- Mold species identified
- Quantity of each mold type
Cost of ERMI Testing
ERMI testing typically ranges from $300–$600 per sample, depending on the lab.
