Environmental Relative Moldiness index known as ERMI test to determine the mold situation in homes and buildings. 

Once the order is created, you will receive your sampling kit. Please return your sample to NSJ EnviroScience (C/- Mint Business Centre | 2 Portside Crescent | Maryville NSW 2239 | Newcastle | Australia) and at no extra cost for you, the sample will be sent to Lis Biotech laboratories in Texas, US.

Upon receipt of the sample(s) in our offices, it will be processed in the time chosen by you in the order (Same Day, 1, or 3 days). After that time you will receive an email with the results, using the email address provided in the Chain of Custody sent with your sample.


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ERMI is an acronym for Environmental Relative Moldiness Index and it was developed by the U.S. Environmental Protection Agency (EPA), Office of Research and Development (ORD) as a research tool to investigate mold contamination in homes. The EPA designed the test as a   ranking system based on dust samples collected from homes, to predict the moldiness of homes. The ERMI is a tool used to predict the potential risk of indoor mold growth and associated health effects to occupants. 

The ERMI is a DNA based method of testing, using mold-specific quantitative polymerase chain reaction (MSQPCR), that identifies and quantifies 36 molds and calculates an index number for comparison with a database of reference homes.  

The ERMI uses the analysis of settled dust in homes and buildings to determine the concentrations of the DNA of the different species of molds.

For more information go to: qPCR Services


Sample Processing Time (SPT)

Same Day, 1 Day, 3 Day

Return Policy

For same-day or 1-day turnaround service orders cannot be canceled .
A refund of 70% of the total purchase is available for all services with a turnaround time over 2 days, only if the cancelation is received by email before 1 P.M. (CST) of the day after the customer receives the email confirmation about the sample reception by Lisbiotech. Please send the email to For the sake and protection of Lisbiotech employees the cancelation cannot be processed by phone.
The refund request is under the customer's will and responsibility.
The refund request must be submitted in writing within 90 days after the purchase. After this time Lisbiotech can offer the same amount of money in credit (in US dollar currency) to the customer for future testing.
Please allow a minimum of 5-7 business days for the refund.
Additional courier fees are the responsibility of the customer. You may choose another method of shipment if there are any additional fees for pick up in your area.

Sampling type

Dust Clothing Kit, Vacuum Kit

ERMI Score Considerations

"The ERMI score is a parameter designed to estimate the water damage experienced by a building. It is based on an assessment of the levels of DNA of groups of molds found to be associated with such buildings, as proposed by the work of Vesper( ) – it is calculated by firstly taking the log10 of the Spore Equivalents of each mold concentration determined from the MSqPCR analysis of the DNA found in the dust sample provided. Then the sum (A) of the logs of Group 1 (a selected set of 26 molds associated with locations where mold growth has occurred following water damage) is calculated. Similarly, the sum (B) of the logs of group 2 (a selected set of 10 reference molds commonly found in indoor locations) is calculated. The difference between these sums (A-B) is then becomes the ERMI score. This result is a relative index of the mold level present in the environment where the sample was collected as a determinant of the water damage historically suffered by the building. This index alone does not provide information about the amount or kind of mold present in the sample. However, individual mold information can be found in the ""ERMI PANEL QPCR ANALYSIS"" section of this report, where each mold concentration is expressed as SE/mg (Spore Equivalent per mg of dust)"

NB: Interpretation of the nature, conditions, pathogenicity, toxicity, or other information about mold species must be discussed in consultation with a specialist. Ref "Development of an Environmental Relative Moldiness index for US homes" Vesper S. et al, Occupational Env. Med, 49, 829 – 833.

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