Mold Testing in Houston, TX — Accredited Mold Analysis Lab
Need mold testing in Houston? AGT Labs is an AIHA EMLAP-accredited, Texas TDLR-licensed mold analysis laboratory (License LAB1070) at 10200 East Freeway, Suite 101, Houston TX 77029. We analyze spore trap air samples, tape-lift and swab surface samples, and bulk materials for homeowners, property managers, mold inspectors and remediation contractors — drop off in Houston or ship from anywhere in the U.S. AGT Labs is an independent laboratory: we do not perform inspections or remediation, so your results are unbiased. Samples received before 2:00 PM CT are logged the same day.
Why accredited mold testing protects your business
OSHA & NIOSH Defensibility
Results from AIHA EMLAP accredited labs are recognized by OSHA enforcement, legal counsel, and insurance carriers — DIY kits are not.
Worker Health Protection
Chronic mold exposure causes respiratory illness, allergic reactions, and asthma. Quantified data drives targeted engineering controls. Facilities using spray foam insulation should also evaluate isocyanate exposure alongside mold monitoring.
Liability & Insurance
Texas property and liability insurers require licensed lab results (#LAB1070) for mold-related claims — accreditation protects your coverage.
Clearance & Reoccupancy
Post-remediation clearance samples analyzed by a TDLR-licensed lab give your mold assessor the data needed to document clearance under Texas rules.
What Is Professional Mold Testing & Analysis?
Mold testing identifies the types and concentrations of mold spores in indoor air, on surfaces, and inside HVAC systems. Unlike consumer-grade home mold kits, professional mold testing performed in an accredited lab follows validated AIHA, ASTM, and CDC/EPA methodologies and produces legally defensible mold testing data.
At AGT Labs, every mold sample is analyzed in our Houston facility — no outsourcing — by analysts trained to AIHA EMLAP requirements. Results are compared against indoor/outdoor background spore levels and established mold exposure assessment guidelines from AIHA and EPA.
Consultants, inspectors, remediation contractors, and facility teams across Texas send mold samples to our accredited mold testing lab for spore trap, tape-lift, swab and bulk analysis — with same-day login on samples received before 2:00 PM CT and rush turnaround available. Mail-in and courier drop-off are both supported.
Commercial mold investigations in occupied buildings typically include a broader indoor air quality (IAQ) assessment to evaluate co-occurring pollutants such as VOCs, formaldehyde, and CO2 that may contribute to occupant complaints. Where the moisture came from a building water system rather than a roof or envelope leak, that same investigation often extends to Legionella testing of the potable, hot water and cooling tower systems. Mold analysis is a specialized IH testing discipline that requires AIHA EMLAP accreditation — a credential our industrial hygiene testing lab has held continuously since 2012.
- Airborne mold spore counts by genus (non-viable spore trap)
- Surface mold contamination mapping (tape lift, swab, bulk)
- HVAC mold testing and duct system fungal assessment
- Post-remediation clearance sample analysis
How to Get Mold Testing in Houston
Every mold test has two parts: someone collects the sample, and an accredited lab analyzes it. AGT Labs handles the analysis — here is how to get your samples to us.
Working with a mold inspector?
Ask your inspector or assessor to send the samples to AGT Labs. Inspectors use our independent mold testing lab for inspectors program for kits, chain of custody and portal reporting.
Drop off or ship samples
Bring samples to 10200 East Freeway, Suite 101, Houston TX 77029, or ship them to the same address with a completed chain of custody form. Samples received before 2:00 PM CT are logged the same day.
Remediation just finished?
Your contractor or assessor submits post-remediation clearance samples, and we report the results they need to document the clearance.
Testing your home yourself?
Collect a tape-lift or swab sample of the suspect spot and drop it off or ship it to us. See home mold testing.
Accredited Mold Testing Methods — Which One Do You Need?
Choosing the right sample type determines whether results are actionable. Every method below is analyzed by direct microscopy within our AIHA EMLAP scope of accreditation — here is what each one measures and what you receive in the report.
Spore Trap Air Analysis
Air-O-Cell and similar spore trap cassettes are analyzed by direct microscopy. We report total spores per cubic meter and spore types by genus, so you can compare indoor air with an outdoor control sample.
Tape-Lift & Swab Surface Analysis
Tape lifts and swabs from walls, ceilings, diffusers and other surfaces are examined directly under the microscope to confirm whether visible growth or staining is mold, and which spore types are present.
Bulk Material Analysis
Drywall, wood, carpet, insulation and other water-damaged building materials are examined directly for fungal growth and the spore types present.
HVAC & Duct Samples
Tape lifts, swabs and bulk samples from ductwork, coils, drain pans and diffusers help identify mold reservoirs that redistribute spores through a building — a source air sampling alone can miss.
Post-Remediation Clearance Samples
After remediation, spore trap and surface samples show whether indoor spore levels are comparable to outdoor background and whether surfaces show residual growth. Your mold assessor uses our results to make the clearance determination required under Texas rules.
What's Included in Your Report
Every analysis type, the method our IH lab follows, and exactly what you receive — no surprises.
| Analysis Type | Method / Standard | Sample Type | Report Deliverable |
|---|---|---|---|
| Spore Trap Air (Non-Viable) | Direct microscopy · SOP 057.08 (AIHA EMLAP) | Air-O-Cell or similar spore trap cassette | Spore counts by genus, spores/m³, indoor/outdoor comparison |
| Surface — Tape Lift | Direct microscopy · SOP 056.07 (AIHA EMLAP) | Tape lift slide | Fungal presence, spore types, relative loading |
| Surface — Swab | Direct microscopy · SOP 056.07 (AIHA EMLAP) | Sterile swab | Fungal presence, spore types, relative loading |
| Bulk Material | Direct microscopy · SOP 056.07 (AIHA EMLAP) | Drywall, wood, carpet, insulation | Fungal presence, spore types |
| HVAC / Duct | Direct microscopy | Swab, tape lift, bulk | Fungal presence and spore types by location |
| Post-Remediation Clearance | Spore trap + surface direct microscopy | Air + surface samples | Results with indoor/outdoor comparison for your assessor's clearance determination |
Mold Types Our Lab Identifies
Our analysts identify mold spores by direct microscopy to the genus level — distinguishing the water-damage indicators and common indoor types that carry different remediation significance, not just "mold present/absent."
Turnaround Times & Sample Submission
From kit request to final report — here's exactly what to expect, including how to submit and when you'll have results.
Mold Testing Isn't One-and-Done
Mold work runs in phases — initial assessment, monitoring during remediation, and post-remediation clearance each need their own round, and Gulf Coast humidity means recurring HVAC and moisture-driven checks keep buildings compliant year-round. Set up a recurring monitoring program or standing account and we'll set your recurring submission calendar, hold your media and kits, and apply volume pricing.
What's in Your Sampling Kit
- Air-O-Cell or Burkard spore trap cassettes
- Sterile swabs and tape lift slides
- Chain of Custody form (pre-filled with your info)
- Pre-paid return shipping label (domestic)
- Field blank and duplicate sets included
Courier Pickup Available
- Houston metro area — same day pickup
- Bay City · Freeport · Lake Jackson
- Victoria · Harlingen · South Texas
- UPS Ground shipping nationwide
- International — client pays freight
Sampling Guidelines & Field Requirements
Follow these parameters to ensure mold samples arrive at our lab in a condition that produces valid, actionable results. For a full breakdown of all analysis methods, media types, and detection limits across every test we offer, see our Industrial Hygiene Sampling & Analysis Guide.
From Sample Collection to Final Report
Request Kit or COC
Call or email. With 5 business days notice we ship kits directly to your site. Or download the COC and use your own media.
Collect Samples
Follow field parameters above. Document HVAC status, RH, collect blanks. Complete COC form fully before packing.
Ship or Drop Off
Ship UPS or use our courier pickup. Samples logged same day if received before 2 PM CT.
Analysis & QA
AIHA EMLAP accredited analysis at our Houston lab. No outsourcing. QA review by senior analyst before release.
Results & Report
Results on secure online portal. Report includes data, interpretation, indoor/outdoor comparison, and — if applicable — the clearance data your assessor needs.
Hurricane, Flood & Humidity Mold Testing in Houston
Houston's humidity, storm season and frequent water intrusion make mold a year-round concern. After a flood, roof leak or plumbing failure, mold can begin growing on wet drywall, carpet and wood within 24–48 hours. Match the sample to the question — or read our full guide to mold testing after a hurricane or flood:
Visible spots or staining?
A tape-lift or swab sample confirms whether it is mold and which spore types are present.
Musty smell, nothing visible?
Spore trap air samples — indoors and outdoors — show whether indoor spore levels are elevated.
Water-damaged materials?
Bulk samples of drywall, carpet pad or insulation are examined directly for fungal growth.
Cleanup finished?
Clearance samples document conditions before walls are closed or occupants return.
Mold testing across Greater Houston. Drop off samples at our East Freeway lab or ship them overnight. We serve clients in Houston, The Woodlands, Katy, Sugar Land, Pearland, Pasadena, Baytown, Clear Lake, Webster, League City, Friendswood and Galveston — and nationwide.
Regulations & Standards Governing Commercial Mold Testing Labs
These are the frameworks EHS managers, consultants, and industrial hygienists must satisfy — AGT Labs IH testing results are structured to meet all of them. Mold remediation projects in older buildings often trigger parallel requirements for asbestos testing, lead testing, and crystalline silica monitoring when demolition disturbs suspect materials.
Who Relies on AGT Labs Mold Testing Lab
Industrial facilities investigating mold alongside chemical exposure concerns can combine mold sampling with VOC and BTEX testing to distinguish between biological and chemical sources of indoor air contamination. Older industrial buildings with water damage may also require PCB testing for contaminated caulking and PAH testing if coal tar roofing or creosote-treated materials are disturbed during remediation.
Environmental Consultants
Third-party investigations, remediation oversight, clearance sampling, and expert report support for IH consulting firms across Texas and nationwide.
Manufacturing & Industrial
Process area assessments, food-grade facility mold monitoring, HVAC system evaluations, and worker exposure investigations — including isocyanate exposure monitoring for spray coating and polyurethane foam operations. See our dedicated food & beverage manufacturing testing program for the full scope.
Healthcare & Pharmaceuticals
Controlled environment monitoring, cleanroom mold assessments, and regulatory documentation for healthcare facilities and pharma manufacturing.
Government & Schools
Public building IAQ complaints, Texas TDLR-required licensed mold lab sampling, and documentation for state and federal facility compliance programs. See our dedicated education and government & municipal facilities testing programs for the full scope.
Insurance & Legal
Mold-related property claims, litigation support sampling, chain-of-custody documentation, and expert-ready reports for insurers and legal teams in Texas.
Abatement Contractors
Analysis of pre-remediation baseline, in-progress monitoring and post-remediation clearance samples — accredited results your assessor and insurer can rely on. See our dedicated restoration & remediation contractor testing program for the full scope.
Property & Facility Managers
Routine and complaint-driven mold testing for apartments, offices, schools and hotels across Greater Houston — independent results with no inspection or remediation sales pitch attached.
Mold Remediation Monitoring & Post-Remediation Clearance Testing
Airborne mold spore concentrations can spike significantly when contaminated materials are disturbed. Real-time mold air quality monitoring during remediation verifies that engineering controls — containment barriers, negative air machines, HEPA filtration — are performing correctly before workers and occupants are exposed.
Post-remediation mold clearance testing from a licensed laboratory is not optional in Texas — it is legally required for commercial properties under TMARR. Our clearance sample reports include indoor vs. outdoor spore count comparison and surface sample results, which your licensed mold assessor uses to make the clearance determination. Water-damaged buildings that require mold remediation may also need asbestos testing if demolition disturbs suspect materials — particularly in structures built before 1980 where pipe insulation and ceiling tiles often contain chrysotile. Flood-damaged facilities should also consider formaldehyde testing for composite wood products exposed to moisture, and mercury vapor monitoring if broken thermometers, switches, or fluorescent lamps are present in the debris. Buildings that have been flooded, or that sat unoccupied while remediation was under way, also carry stagnant water in the plumbing — a condition that favours Legionella growth. Flush and sample the water system before reoccupancy, not after.
- Mold spore air monitoring inside and outside remediation containment
- Verification that negative air pressure is maintained throughout abatement
- Post-clearance fungal spore counts compared against outdoor baseline
- Surface mold sampling of previously contaminated areas
- Lab report with indoor vs. outdoor comparison for your assessor
- Rush mold clearance testing available — 1 business day TAT
Mold Testing — Frequently Asked Questions
Does AGT Labs do mold inspections?
What turnaround times do you offer for mold testing?
What's the difference between spore trap and tape-lift mold testing?
Is AGT Labs licensed for mold testing in Texas?
Can you detect Stachybotrys (black mold)?
What do clearance samples confirm after remediation?
How do I submit samples to AGT Labs?
Do you supply sampling equipment and kits?
What are common signs that mold testing is needed?
How much does commercial mold testing cost?
What is an acceptable indoor mold spore count?
We are testing for mold after a flood — should we test the water for Legionella too?
Houston's Accredited Mold Testing Lab
AGT Labs — Houston's accredited industrial hygiene testing lab — is located at 10200 East Freeway, Suite 101, Houston TX 77029, serving the Gulf Coast region with same-day log-in for samples received before 2:00 PM CT.
Commercial Real Estate & Insurance
Post-flood and post-storm mold assessments and clearance sampling — TX TDLR License #LAB1070 reports accepted by Texas property insurers and state compliance programs.
Healthcare & Texas Medical Center
Controlled environment mold monitoring for Houston's Texas Medical Center facilities, hospital IAQ investigations, and pharmaceutical cleanrooms requiring AIHA EMLAP documentation.
Manufacturing & Port Operations
HVAC mold assessments for Houston Ship Channel industrial facilities, food-grade manufacturing, and Port of Houston warehouse environments.
Government & Schools
TX TDLR-required licensed lab sampling for public buildings, Houston ISD programs, and federal facility compliance documentation under EPA mold guidelines.
Ready to Submit Mold Testing Samples or Request a Quote?
AIHA EMLAP accredited mold testing · IH testing lab · Texas TDLR Mold License #LAB1070 · Rush mold clearance testing available · Houston TX · Nationwide shipping. Ask about recurring monitoring programs and volume pricing for multi-phase remediation projects and ongoing facility mold surveillance.