Clean weed? Labs test for contaminants, but that may not prevent tainted marijuana products

Marijuana can contain trace amounts of heavy metals, pesticides, yeast, mold and more. So stick that in your pipe when you smoke it.

But chemical testing is being rolled out in Oklahoma’s fledgling medical marijuana industry that should help consumers gain confidence their medicine won’t contain items with a technical term like “pathogenic microorganisms.”

Or perhaps someone doesn’t really use the products for the strictest of medical purposes, but still would like to know their supply isn’t contaminated with mycotoxins, which can damage organs and can be linked to cancer.

What about potency, and the flavor profiles of a product? Again, this information can help provide guidance for dose amounts for a patient, or help a connoisseur distinguish between strains.