There are 2 different types of mold tests, a swab sample and an air quality test. If there is a specific area of the house has a microbial growth this can be tested with a swab sample to determine what type of growth it is.
An air quality sample is taken to determine what kinds of spores are in the air inside the house. A 2-sample minimum is required for this test. A sample outside and inside to compare the common outdoor spores to the spores found inside the house.
Both the swab and air quality samples are sent next day air to the lab to be tested to determine what was found. From the day, the sample is submitted to when the results are received are about 3 business days.