Generally, it is not necessary to identify the species of mold or mildew growing in a residence, and CDC does not recommend routine sampling for mold or mildew. Current evidence indicates that allergies are the type of diseases most often associated with mold or mildew. Since the susceptibility of individuals can vary greatly either because of the amount or type of mold or mildew, sampling and culturing are not reliable in determining your health risk. If you are susceptible to mold or mildew and mold or mildew is seen or smelled, there is a potential health risk; therefore, no matter what type of mold or mildew is present, you should arrange for its removal. Furthermore, reliable sampling for mold or mildew can be expensive, and standards for judging what is and what is not an acceptable or tolerable quantity of mold or mildew have not been established. ....