NYLMB · IICRC · Since 2012
(631) 625-8807
Long Island Mold Co. logo

Assessment Service

Mold Testing on Long Island

AIHA-lab air and surface samples. Species ID, spore counts, indoor-vs-outdoor comparison. Chain-of-custody available for legal use.

NYLMB Licensed
IICRC Certified
Same-week scheduling

Free Inspection Request

Get a same-week callback.

We call within 1 business hour. NYLMB-licensed · IICRC certified · Insurance-friendly.

NYLMB Licensed · MA00534 / MR00612
IICRC CMR & AMRT Certified
4.9★ · 187+ Google Reviews
EPA RRP Lead-Safe
Since 2012 · 2,800+ Homes

Overview

Mold Testing: what we actually do.

Mold testing is the lab component of assessment — used when visual inspection alone can't answer the question. The most common uses: confirming Stachybotrys before a major remediation, establishing a pre-remediation baseline, post-remediation verification (PRV), and legal disputes where samples need chain-of-custody.

When to call us

  • Confirm or rule out Stachybotrys (toxic black mold) before remediation
  • Post-remediation verification clearance testing (PRV)
  • Health-complaint investigation with no visible mold
  • Tenant-landlord legal dispute requiring admissible samples
  • Indoor air quality (IAQ) baseline for asthma or sensitivity concerns

Our process

01

Sampling plan

Determine which rooms, which heights, which comparisons (indoor vs outdoor, affected vs unaffected). AIHA protocols drive this.

02

Air cassette pumps

Air samples at 15 L/min for 5–10 minutes per location. Sealed cassettes with chain-of-custody forms.

03

Surface swabs

If visible growth is present, direct swabs or tape-lifts from suspect areas.

04

Lab processing

Sealed, logged, shipped same day to the AIHA-accredited lab. 3–5 business day standard turnaround, 24-hour rush available.

05

Results + interpretation

You receive the lab report directly. We provide interpretation: what the numbers mean, whether they exceed normal outdoor baseline, whether remediation is warranted.

The real causes we see in Long Island homes

Asthma flare-ups

Parents trying to figure out why a child's asthma is worse at home than at school. Air-sampling a child's bedroom often reveals elevated Pen/Asp from a hidden leak.

Real-estate disputes

Buyer's inspector flagged mold; seller disputes the scope. Independent third-party testing resolves the question.

Post-remediation verification

Every remediation of 10+ sqft should end with PRV clearance testing. Independent (us) versus same-company (not us) — we're the independent option.

Pricing

Two-point air sample (inside + outside): $450–$650. Full IAQ panel (5 samples + 2 swabs): $700–$950. Rush 24-hour turnaround: add $200.

Every quote is fixed after inspection — no hourly billing, no change orders unless the substrate reveals hidden contamination.See full pricing guide →

Field Log

Recent Testing Jobs

Real jobs. Real towns. Actual scope and scale from our last 90 days of field work.

Mold Testing in HuntingtonMold Testing
Huntington, Suffolk County Mar 5

Indoor air quality panel — child with asthma. Lab results: elevated Pen/Asp in child's bedroom. Traced to hidden wall leak. Referred to plumber, retested clean.

Air Quality Testing in Port JeffersonAir Quality Testing
Port Jefferson, Suffolk County Dec 2

Post-remediation verification clearance after DIY job. Failed first cycle — containment wasn't sealed properly. We rebuilt the chamber, ran AFDs 72 hours, passed.

Mold Testing in MineolaMold Testing
Mineola, Nassau County Nov 14

Tenant–landlord dispute. Third-party air sampling with chain-of-custody for NY housing court. Report admissible, case resolved.

FAQ

Questions homeowners ask about testing

The drugstore kits are borderline useless — they grow whatever lands on them, including normal outdoor spores, and don't quantify. For any meaningful result, you need pump-sampled cassettes sent to an accredited lab.
There's no legal threshold. The standard interpretation: interior spore counts significantly above outdoor control suggest an indoor source. Species matter: Stachybotrys and Chaetomium are never normal indoors.
About 30 days. After that, conditions (humidity, HVAC, occupancy) can change enough that the baseline shifts.
No — visual inspection and lab testing are billed separately. Most clients bundle: inspection + 2-3 air samples is common.

More services

Related work we do.

Ready to breathe easier?

Same-week scheduling. Crew on-site in days, not weeks.

Free visual inspection, same-day estimate. Licensed assessor handles the test separately from remediation — NY Article 32 compliant from the first call.

Mon–Sun 7am–8pm · 24/7 emergency line

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