Pot contamination is a serious concern. Pathogenic microorganisms on cannabis can be harmful if inhaled, especially if taken as a medicinal product by a cancer patient receiving chemotherapy who may have a weakened immune system.
Last year, state regulators recalled marijuana products sold at dispensaries in Detroit and Kalamazoo after the products failed lab tests for mold and bacteria, and in Lansing because of chemical contamination.
The Michigan Information & Research Service reported that Ben Rosman, the founder of the Michigan Coalition of Independent Cannabis Testing Laboratories, said there is a ton of contaminated cannabis on the shelves.
He said his lab, PSI Labs in Ann Arbor, has tested and found tainted pot.