The Lab Does Not Know Who Hired Us
A homeowner in Spring Valley had been dealing with sinus symptoms for eight months. Her doctor had run allergy panels twice. Everything came back normal. She told me she had started to think she was imagining it. I did an air assessment, pulled samples from her master bedroom and the hallway outside it, and sent them to the lab with a baseline sample from outside. The indoor results came back with Aspergillus counts six times the outdoor level. Her HVAC return was pulling air from a crawl space with active mold growth every time the system ran. She was not imagining anything.
That is the test that mattered. Not a store-bought kit with a petri dish. Not a surface swab from visible discoloration. A calibrated spore trap, an independent accredited lab, and a comparison against what the outdoor air actually looked like that day in her part of Las Vegas. That comparison is the difference between a number and a conclusion.
Mold Eliminators uses fully independent labs on every job. The lab does not know who hired us, has no stake in what the results say, and does not do remediation work. A company that tests and remediates has a financial reason to find a problem. We separated those two functions deliberately. Read more about why independent lab testing matters and how it protects you.
Why Las Vegas Creates Specific Testing Challenges
The dry climate here throws off instincts. Surfaces dry fast. The smell may be faint or absent entirely. I have found significant Penicillium and Stachybotrys contamination in homes where the occupants had no idea anything was growing, because the desert air kept the surface dry even while the inside of the wall assembly stayed wet enough to support active colonies.
Swamp coolers are another factor I see constantly across North Las Vegas, the older neighborhoods in Paradise, and Spring Valley. Old evaporative cooler pads develop Cladosporium and Aspergillus colonies that push spores through every room every time the cooler runs. Occupants blame their symptoms on outdoor dust or seasonal allergies. The actual source is running twelve hours a day through their ductwork. This does not show up on a visual inspection. It shows up on a lab report.
Monsoon season adds a third layer. Between July and September, we get flash flooding events that push water under doors, through window frames, and into slab cracks across the valley. A home in Green Valley or Summerlin that took water during a monsoon event and dried out visually on the surface may have active growth inside the wall base within two weeks. Thermal imaging during the assessment finds the moisture that the surface does not show. Read our guide to signs of water damage behind walls for what to look for before the mold becomes visible.
What a Complete Assessment Looks Like
I start with a visual inspection and thermal imaging pass through every room of concern. Thermal cameras find cold spots that indicate moisture behind walls, under flooring, or in ceiling assemblies. A cold spot that shows up consistently on thermal and confirms wet on a moisture meter tells me exactly where to focus the air sampling.
Air sampling uses a calibrated spore trap attached to a pump that pulls a measured volume of air through the collection cassette over a timed cycle. We take samples in every area of concern plus one outdoor baseline sample collected the same day. That outdoor baseline is critical. Las Vegas outdoor mold counts vary. A sample from a Summerlin home after a monsoon event has a different outdoor baseline than a sample from the same home in February. The lab compares your indoor counts against what was actually in the air outside that day, not against a national average.
Surface sampling uses tape lifts or swabs to identify species on visible growth. Air sampling tells you what you are breathing. Surface sampling tells you what is growing on the material itself. When both are elevated for the same species in the same room, that confirms an active indoor source rather than elevated outdoor counts drifting in through normal ventilation.
Everything goes to the lab in a sealed chain of custody package. We do not handle samples after collection. Results come back within a few business days. If results confirm contamination, our mold removal service uses those results to define the exact scope of work.
Understanding the Report
The written report identifies every species found, the spore count per cubic meter for each species, and the indoor-to-outdoor comparison. You will see which rooms are elevated, which species are present, and how far above outdoor baseline the counts are. Some species matter more than others. Elevated Stachybotrys, even at moderate counts, indicates a hidden chronic moisture problem because that species requires sustained wetness to establish. Elevated Aspergillus matters more if there are immunocompromised occupants in the home. The report gives you the data. I walk you through what it means before it is finalized.
The report satisfies Nevada compliance requirements for landlords and property managers, insurance documentation for water damage claims, and contractor permit applications. It also gives any future mold remediation scope a documented foundation. You pay for exactly what the testing says needs to be addressed, not what a contractor estimates by looking at the wall.
Testing Is Free for Property Owners
If you own the property you are asking us to assess, there is no charge. The inspection, thermal imaging, air sampling, lab fees, and written report are all included. No upfront cost and no obligation to use us for remediation.
For landlords and property managers, fees depend on the scope and number of units involved. Call and I will tell you exactly what it costs before you schedule anything. Want to know how our professional testing compares to what you can buy at a hardware store? Read our FAQ on DIY mold testing vs professional lab testing. Or read what a professional mold inspection looks like from start to finish.