Enter the five mold numbers from your ERMI or HERTSMI-2 lab report. This tool adds them up into a single score that tells you whether a building is likely safe to live in if you are sensitive to mold.
Enter all five numbers from your report above. A HERTSMI-2 score only means something when every one of the five species is accounted for.
Each species is scored against its own scale, because they are not equally harmful. Stachybotrys hits the maximum ten points above roughly 125, while Wallemia needs more than 2,500 to do the same. That is why a big-looking Wallemia number can barely move your total.
Units are spore equivalents per milligram of dust. Thresholds as published in the HERTSMI-2 scorecard (Surviving Mold, 2014).
Wondering whether your genes make you more sensitive to mold in the first place? Check your HLA haplotype.
For information only. This calculator reproduces a published scoring system and is not a medical device, a diagnosis, or a substitute for advice from your practitioner or a qualified mold inspector. Scores are guidelines, not guarantees: sensitive people sometimes react in low-scoring buildings, and this test measures only five species. Decisions about where to live or what to remediate should be made with a professional who knows your case.