ermi mold test
A DNA-based dust analysis for evaluating relative moldiness and identifying 36 mold species associated with water damage and common indoor dust reservoirs.

ERMI

Price range: $240 through $435
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.

EnviroBiomics DNA Mold Testing

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.

36 Mold Species DNA-Based Analysis HERTSMI-2 Included Swiffer or Vacuum Kit
Included

What’s included

DNA-based analysis of 36 mold species
Water-damage indicator molds and common indoor molds
ERMI score calculation
HERTSMI-2 information included
Swiffer Kit and Vacuum Kit options available
Multiple turnaround time options available
01

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.

02

How the ERMI score is calculated

ERMI = Sum of log10 Group I molds − Sum of log10 Group II molds

Group I includes molds more commonly associated with water-damaged buildings. Group II includes common indoor molds often found in background dust.

Interpretation

ERMI interpretation ranges

Q1 / Green
-10 to -4

Low relative moldiness

Q2 / Amber
-4 to 0

Low to medium relative moldiness

Q3 / Amber
0 to 5

Medium to high relative moldiness

Q4 / Red
5 to 20

High relative moldiness

Very High
>20

Very high relative moldiness

Collection

Sample collection options

S

Swiffer Kit

Swiffer cloth sampling is useful for homes with hard flooring, limited carpet, or when a non-vacuum collection method is preferred.

V

Vacuum Kit

Vacuum dust sampling is commonly used for carpeted areas because carpet can act as a reservoir where mold particles accumulate over time.

Species

Mold species included in ERMI

Group I

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
Group II

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

Turnaround and shipping details

Same-Day Service
Samples must arrive by 12 PM CST. Samples arriving after 12 PM are processed as one-day service.
One-Day Orders
Order cut-off is 3 PM CST.
Overnight Kit Shipping
Place the order before 3 PM CST for overnight shipping fulfillment.
Business Days
Orders are processed according to the selected turnaround time and business-day schedule.
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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.