ERMI
Same Day Service
All SAME-DAY tests must arrive by 12 PM. Otherwise, they will be processed as one day.
One Day Service
One day Orders Cut-Off 3 p.m. CST
All orders are processed according to the turnaround time selected
We only process orders on business days.
Overnight Kits shipping
If you need an overnight, please place the order before 3 PM CST to be able to fulfill your order; otherwise, it will be left for the next day for logistics reasons. All our shipping is calculated in business days.
ERMI Mold Test
The ERMI Mold Test is a DNA-based dust analysis used to evaluate relative moldiness and identify mold species commonly associated with water-damaged buildings and indoor dust reservoirs.
What’s included
What is ERMI?
ERMI stands for Environmental Relative Moldiness Index. It was developed by scientists at the U.S. Environmental Protection Agency as a research tool for estimating mold contamination by analyzing mold DNA found in dust samples.
The ERMI score compares mold groups associated with water-damaged buildings against common indoor molds to provide a relative moldiness index.
How the ERMI score is calculated
Group I includes molds more commonly associated with water-damaged buildings. Group II includes common indoor molds often found in background dust.
ERMI interpretation ranges
Low relative moldiness
Low to medium relative moldiness
Medium to high relative moldiness
High relative moldiness
Very high relative moldiness
Sample collection options
Swiffer Kit
Swiffer cloth sampling is useful for homes with hard flooring, limited carpet, or when a non-vacuum collection method is preferred.
Vacuum Kit
Vacuum dust sampling is commonly used for carpeted areas because carpet can act as a reservoir where mold particles accumulate over time.
Mold species included in ERMI
Water-damage indicator molds
- Aspergillus flavus/oryzae
- Aspergillus fumigatus
- Aspergillus niger
- Aspergillus ochraceus
- Aspergillus penicillioides
- Aspergillus restrictus
- Aspergillus sclerotiorum
- Aspergillus sydowii
- Aspergillus unguis
- Aspergillus versicolor
- Aureobasidium pullulans
- Chaetomium globosum
- Cladosporium sphaerospermum
- Eurotium amstelodami
- Paecilomyces variotii
- Penicillium brevicompactum
- Penicillium corylophilum
- Penicillium crustosum
- Penicillium purpurogenum
- Penicillium spinulosum
- Penicillium variabile
- Scopulariopsis brevicaulis/fusca
- Scopulariopsis chartarum
- Stachybotrys chartarum
- Trichoderma viride
- Wallemia sebi
Common indoor molds
- Acremonium strictum
- Alternaria alternata
- Aspergillus ustus
- Cladosporium cladosporioides type 1
- Cladosporium cladosporioides type 2
- Cladosporium herbarum
- Epicoccum nigrum
- Mucor amphibiorum
- Penicillium chrysogenum
- Rhizopus stolonifer
Turnaround and shipping details
Important note
ERMI is an environmental analysis and does not diagnose disease. Results should be interpreted together with building history, visible moisture conditions, occupant concerns, and, when needed, a professional inspection.
