MoldMold AnalysisAnalysis
Advanced mold analysis using state-of-the-art laboratory equipment and scientific methods to identify mold species, assess health risks, and provide detailed recommendations for remediation and prevention.
Mold Analysis Handbook
A practical guide to common residential and commercial mold groups tested nationwide. Learn health impacts, where they grow and why, and how to reduce or prevent growth.
Absidia
Health Impact
Common Zygomycete; often environmental, can be opportunistic in rare cases.
Where It Grows & Why
Soil and decaying organic matter; moisture events indoors.
How to Reduce/Prevent
Control moisture; remove decaying organic debris; improve ventilation.
Acremonium (incl. A. strictum)
Health Impact
Environmental; some species can be irritants; slow-growing.
Where It Grows & Why
Drywall, HVAC components, insulation, chronically damp materials.
How to Reduce/Prevent
Fix chronic humidity; clean coils; replace contaminated insulation.
Alternaria (incl. A. alternata)
Health Impact
Common allergen; triggers asthma and rhinitis in sensitized individuals.
Where It Grows & Why
Windowsills, painted walls, paper; carried from outdoors.
How to Reduce/Prevent
Ventilate wet rooms; reduce condensation; clean windows and sills.
Arthrinium
Health Impact
Secondary colonizer; usually low pathogenicity; can be allergenic.
Where It Grows & Why
Wood or paper products; secondary to moisture problems.
How to Reduce/Prevent
Repair leaks; dry assemblies; remove contaminated paper/wood.
Ascospores
Health Impact
Generic outdoor spore group; allergenic to some.
Where It Grows & Why
Outdoor sources; indicates outdoor air infiltration when elevated indoors.
How to Reduce/Prevent
Improve envelope sealing and filtration; manage openings.
Aspergillus (all species)
Health Impact
Major indoor genus; allergenic/toxigenic/pathogenic species exist.
Where It Grows & Why
Dust, HVAC, insulation, drywall, stored foods; moderate RH.
How to Reduce/Prevent
RH <50%; MERV 11+ filtration; clean dust; maintain HVAC.
Aureobasidium (A. pullulans)
Health Impact
Allergenic; common on painted wood and caulking.
Where It Grows & Why
Window frames, sealants, painted wood in condensation zones.
How to Reduce/Prevent
Reduce condensation; use mildew-resistant caulks; keep dry.
Basidiospores
Health Impact
Often outdoor/wood-decay fungi; allergenic to some.
Where It Grows & Why
Wood decay outdoors; infiltration indoors when windows open.
How to Reduce/Prevent
Filtration; manage openings; address moisture on wood.
Bipolaris / Drechslera / Exserohilum
Health Impact
Allergenic plant/soil fungi; commonly airborne.
Where It Grows & Why
Soil, plants, settled dust; humid regions.
How to Reduce/Prevent
Control dust; filtration; address plant/soil reservoirs.
Botrytis
Health Impact
Allergenic; thrives in very humid interiors/greenhouses.
Where It Grows & Why
Greenhouses, high humidity buildings, damp plant matter.
How to Reduce/Prevent
Dehumidify; separate plant areas; improve airflow.
Chaetomium (incl. C. globosum)
Health Impact
Indicator of long-term water damage; allergenic/irritant.
Where It Grows & Why
Cellulose decomposer on wet drywall and paper facers.
How to Reduce/Prevent
Eliminate leaks; remove contaminated cellulose; dry thoroughly.
Chrysosporium
Health Impact
Soil/keratin fungi; occasional environmental findings.
Where It Grows & Why
Keratin substrates; soil; rarely significant indoors.
How to Reduce/Prevent
Housekeeping; control soil/animal hair inputs.
Cladosporium (incl. C. cladosporioides, C. herbarum, C. sphaerospermum)
Health Impact
Common indoor/outdoor; dark-pigmented; allergenic.
Where It Grows & Why
Painted surfaces, textiles, wood; intermittent moisture.
How to Reduce/Prevent
Reduce moisture; dry textiles; repaint/seal surfaces.
Curvularia
Health Impact
Common allergen; soil/dust associated.
Where It Grows & Why
Soil and settled dust; HVAC/mechanical spaces.
How to Reduce/Prevent
Filtration; dust control; manage envelope humidity.
Epicoccum (E. nigrum)
Health Impact
Allergenic; orange colonies; cellulose decomposer.
Where It Grows & Why
Paper/drywall in damp conditions.
How to Reduce/Prevent
Repair moisture; dry and seal cellulose materials.
Epidermophyton
Health Impact
Dermatophyte; more medical relevance than environmental.
Where It Grows & Why
Human/animal skin infections; rarely environmental growth.
How to Reduce/Prevent
Hygiene; avoid cross-contamination of medical samples.
Eurotium (E. chevalieri, E. repens)
Health Impact
Xerophilic; teleomorph of Aspergillus; allergenic potential.
Where It Grows & Why
Very dry surfaces, stored foods, dust.
How to Reduce/Prevent
Control dryness/dust; proper storage of foods.
Fusarium
Health Impact
Some species produce mycotoxins; irritant/allergen.
Where It Grows & Why
Plant materials, humidifiers, damp drywall/carpets.
How to Reduce/Prevent
Repair leaks; dry wall cavities; replace saturated carpet.
Geotrichum
Health Impact
Occasional environmental finding; can be allergenic.
Where It Grows & Why
Spoiled food; HVAC components; damp areas.
How to Reduce/Prevent
Clean HVAC; discard spoiled foods; housekeeping.
Helminthosporium
Health Impact
Soil/plant fungus; occasional indoor detection.
Where It Grows & Why
Soils/plants; damp dust.
How to Reduce/Prevent
Reduce plant/soil reservoirs; dehumidify.
Memnoniella
Health Impact
Related to Stachybotrys; blackish colonies; water damage.
Where It Grows & Why
Wet drywall and cellulose materials; chronic moisture.
How to Reduce/Prevent
Eliminate leaks; remove colonized drywall/paper facers.
Microascus
Health Impact
Soil/wood; occasional indoor report; allergenic potential.
Where It Grows & Why
Soil and wood contact; damp assemblies.
How to Reduce/Prevent
Eliminate dampness; ensure drying; remove contaminated wood.
Microsporum / Trichophyton / Epidermophyton (group)
Health Impact
Dermatophytes; primarily medical; rarely environmental significance.
Where It Grows & Why
On hosts; environmental samples usually from contamination.
How to Reduce/Prevent
Hygiene; segregate medical vs. environmental sampling.
Mucor (incl. M. hiemalis, M. racemosus)
Health Impact
Fast-growing contaminant; allergenic to some.
Where It Grows & Why
Food and damp organic matter; water incidents.
How to Reduce/Prevent
Dry spills quickly; housekeeping; RH control.
Nigrospora
Health Impact
Dark pigmented mold; soil related; allergenic.
Where It Grows & Why
Soil/dust; damp surfaces intermittently.
How to Reduce/Prevent
Reduce dust; improve filtration; manage moisture.
Paecilomyces (P. variotii)
Health Impact
Water-damaged materials; similar to Penicillium; allergenic.
Where It Grows & Why
Damp drywall, insulation, paper/cardboard.
How to Reduce/Prevent
Fix water issues; replace affected materials.
Penicillium (all species)
Health Impact
Common indoor mold; airborne spores frequent; allergenic.
Where It Grows & Why
Water-damaged materials, dust, foods.
How to Reduce/Prevent
Dry water damage rapidly; housekeeping; filtration.
Phoma
Health Impact
Secondary colonizer; damp walls/materials; allergenic.
Where It Grows & Why
Damp paints, gypsum paper, paper goods.
How to Reduce/Prevent
Repair moisture; repaint/seal after drying.
Pithomyces
Health Impact
Found on cellulose and settled dust; allergenic.
Where It Grows & Why
Paper, dust in damp conditions.
How to Reduce/Prevent
Keep paper/dust dry; housekeeping; RH control.
Rhizopus (incl. R. stolonifer, R. oryzae)
Health Impact
Fast-growing on foods and organic matter; allergenic.
Where It Grows & Why
Fruit/food spoilage; damp organics; water incidents.
How to Reduce/Prevent
Dispose of spoiled foods; dry spills; housekeeping.
Rhodotorula
Health Impact
Pink yeast; cosmetic issue; can be allergenic.
Where It Grows & Why
Damp bathrooms, walls, wet surfaces.
How to Reduce/Prevent
Dry surfaces; improve ventilation; cleaning.
Scedosporium
Health Impact
Water-damage tolerant; occasionally pathogenic; allergenic.
Where It Grows & Why
Wet building materials and standing water incidents.
How to Reduce/Prevent
Rapid water mitigation; remove damaged materials.
Scopulariopsis (S. brevicaulis)
Health Impact
Common in drywall/dust/paper; can produce strong odors.
Where It Grows & Why
Paper, dusty drywall areas; damp assemblies.
How to Reduce/Prevent
Fix moisture; replace compromised paper/drywall.
Stachybotrys (Black Mold)
Health Impact
“Black mold” tied to water-damaged cellulose; irritant/toxigenic potential.
Where It Grows & Why
Chronically wet drywall, paper, fiberboard.
How to Reduce/Prevent
Eliminate leaks; replace colonized materials; dry assemblies.
Stemphylium
Health Impact
Cellulose-associated in damp environments; allergenic.
Where It Grows & Why
Cellulose materials in damp areas.
How to Reduce/Prevent
Moisture control; dry paper-based products.
Trichoderma (T. viride)
Health Impact
Green mold; strong indicator of water-damaged materials.
Where It Grows & Why
Wet gypsum/paper facers, ceiling tiles, insulation.
How to Reduce/Prevent
Moisture control; replace affected porous materials.
Ulocladium
Health Impact
Water-damage indicator; resembles Stachybotrys visually.
Where It Grows & Why
Wet drywall, window sills; poor bathroom ventilation.
How to Reduce/Prevent
Improve ventilation; fix leaks/condensation.
Wallemia (W. sebi)
Health Impact
Xerophilic; thrives in dry dust/HVAC; allergenic.
Where It Grows & Why
Very dry dusty areas, storage, HVAC dust.
How to Reduce/Prevent
Dust management; filtration; storage humidity control.
Zygomycetes (group incl. Mucor, Rhizopus, Absidia)
Health Impact
Fast-growing group; spores commonly seen in air samples.
Where It Grows & Why
Foods, damp organics, water incidents indoors.
How to Reduce/Prevent
Rapid drying and cleanup; control organics and RH.
Most Common Rooms (by %)
Toxicity Level (0-5)
Elevated due to water-damage indicators and potential toxin producers. This score reflects the likelihood of toxin-producing species and the observed moisture pattern for this mold group. Use appropriate PPE and ventilation when disturbance or remediation is expected.
Moisture Sensitivity
Rooms Distribution (Pie)
Sampling Methods Coverage
Seasonal Prevalence
Indoor vs Outdoor Contribution
Remediation Urgency
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