Generally, it is not necessary to identify the species of mold growing in a residence, and the Centers for Disease Control and Prevention (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 can vary greatly either because of the amount or type of mold, sampling and culturing are not reliable in determining your health risk. If you are susceptible to mold and mold is seen or smelled, there is a potential for health effects; therefore, no matter what type of mold is present, you should arrange for its removal. Mold testing is expensive and the results are not always related to health risk.