Professional Reliable Mold Test Kit &ndash; Do It Yourself (DIY) The most Real Sampling Technique. A direct examination of a surface shows exactly what kind of molds are present. When unusual indoor mold is present, Lab point-out indoor mold growth. Inexpensive procedure recommended by experts in the field Mold inspectors and Industrial Hygiene. Includes simple instructions on how and where to collect the most truthful sample.