What is Mold Testing?


The first step in MOLD911's Mold Testing process is to non-intrusively determine if mold is present by visually examining the your home or business. Visible mold helps determine the level of remediation necessary. If mold is actively growing and visibly confirmed, sampling for its specific species can be unnecessary.  Intrusive observation is sometimes needed to assess the mold level. This includes moving furniture, lifting (or removing) carpets, checking behind wallpaper or paneling, checking ventilation ductwork and exposing wall cavities. MOLD911 Certified Mold Inspectors visual inspect and can recognize moldy odors to find your mold issues. We focus on areas where there are signs of liquid moisture or water vapor (humidity), or where moisture problems are suspected.


Mold Testing is performed by our Certified Mold Inspectors  with years of experience in mold-sampling protocols, sampling methods and the interpretation of findings. Mold testing should be done only to make a particular determination, such as airborne spore concentration or identifying a particular species.  Mold Testing and analysis should follow the recommendations of the Occupational Safety and Health Administration (OSHA), National Institute for Occupational Safety and Health (NIOSH), the EPA and the American Industrial Hygiene Association (AIHA).

Multiple types of sampling are recommended by the AIHA, since each has limitations; for example, air samples will not identify a hidden mold source and a tape sample cannot determine the level of contamination in the air. Once our Accredited Third Party Lab analyzes the samples the final results will indicate mold levels and and species type.

Collecting MOLD Samples

  • Air Testing
    Our most common form of sampling to assess mold levels. Indoor and outdoor air are sampled, and their mold-spore levels compared. Air sampling often identifies mold species, concentration and hidden mold.

  • Surface Testing
    Determines the number of mold spores deposited on indoor surfaces, collected on tape or in dust

  • Bulk Testing
    Removal of material from the contaminated area to identify and quantify the mold in the sample

  • Swab Testing
    We swab the area being sampled, often a measured area, and subsequently sent to the mold testing laboratory. Final results will indicate mold levels and species located in suspect area.

Find out why Mold Testing doesn't give you the whole picture?

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