Mold information University of Nevada, Reno

Mold is present in the indoor and outdoor air and on surfaces all around us each day. It requires moisture and a food source to colonize mold. The University does not conduct air sampling or monitoring for mold and instead follows available federal agency guidance:

"Standards for judging what is an acceptable, tolerable, or normal quantity of mold have not been established," and "generally it is not necessary to identify the species of mold growth in a residence, and CDC does not recommend routine sampling for molds. Current evidence indicates that allergies are the type of diseases most often associated with molds. Since the susceptibility of individuals varies greatly either because of the amount or type of mold, sampling and culturing are not reliable in determining your health risk... therefore, no matter what kind of mold is present, you should arrange for its removal." (Center for Disease Control (CDC) Mold.)

"In most cases, if visible mold growth is present, sampling is unnecessary. Since no EPA or other federal limits have been set for mold or mold spores, sampling cannot be used to check a building's compliance with federal mold standards.” (Environmental Protection Agency (EPA) Mold testing.)