Mold Testing in Lexington, MA —
Spore Trap, Viable Culture & ERMI

Spore trap: fast (24–48hr), genus-level ID, quantified concentrations. Viable culture: slower (5–7 days), species-level ID, CFU counts. Most routine Lexington testing starts with spore traps. Viable culture is ordered when the specific question requires species confirmation.

Consumer kits detect presence, not concentration — and they grow positive in nearly every environment. For any situation where results need to support a decision (insurance claim, real estate transaction, remediation planning), accredited lab analysis via calibrated air sampling is the required standard in Lexington, MA.

Minimum two indoor plus one outdoor comparative. Additional samples per floor, zone, or HVAC register depending on the scope of the question. We tell you specifically how many are warranted for your Lexington property before booking.

Non-viable spore trap results from our accredited lab partner typically return in 24–48 hours from the date of sample receipt. We ship samples same-day in most cases, so most Lexington clients receive their written report within 3–5 business days of the testing appointment. Viable culture takes 5–7 business days. ERMI takes 5–10 business days. Rush processing is available from some labs for time-sensitive situations — we can advise on availability.

Testing data tells you whether indoor mold concentrations are elevated above outdoor baseline levels and which genera are present. The decision about whether remediation is warranted depends on the specific genera/species found, the concentration relative to baseline, whether visible growth was identified, and occupant health factors. We interpret lab findings and provide specific recommendations in the written report — but we're transparent that testing data informs the remediation decision, it doesn't make it automatically.