Nevada regulators investigate pot lab testing facilities

Nevada regulators have started an investigation into marijuana testing labs after tainted cannabis batches have triggered two health advisories.

The Las Vegas Review-Journal reported Monday that the Department of Taxation started the investigation Monday after discovering potentially doctored THC levels by cannabis laboratories and products with high levels of yeast and mold on store shelves.

Department officials say marijuana products must be tested by state-licensed labs for potency, yeast, mold, pesticides, heavy metals and other toxins before being sold in dispensaries.

Officials say products from the same cultivators were tainted and discovered on shelves sold between July 10 and Aug. 28 in Las Vegas at Acres Medical, The Apothecary Shoppe and Blackjack Collective.

Officials say mold exposure can lead to stuffy nose, wheezing and itchy eyes or skin.