The Center for Disease Control does not recommend sampling and testing of mold. It is not necessary to identify the species of mold. Most species of mold cause allegies and other health risks of the respiratory systems. If you are susceptible to mold and mold is seen or smelled, you will run significant health risks. Regardless of the type of mold that is present, you should arrange for removal and remediation, which doesn’t involve testing but locating the source of the moisture which allows the mold to cultivate.
More information available at Center for Disease Control.