In 2019 and 2020, vaping-associated lung injuries killed 68 people and injured 2,807 across the United States. As reported by Leafly and later confirmed by officials at the Centers for Disease Control and Prevention (CDC), those injuries and deaths were almost exclusively associated with unlicensed THC vape cartridges purchased from the illicit market.
At the heart of the health crisis was a relatively new vape cartridge additive known as vitamin E acetate. Unlicensed cartridge manufacturers were using the substance, a common ingredient in beard cream, to thicken the cartridge oil and boost profit margins.
After the poisonings, officials at the CDC said the number one thing state cannabis regulators could do to protect public health was ensure that “chemicals of concern” like vitamin E acetate did not enter the state-licensed THC vape cartridge supply.
As of early 2021, cannabis regulators have not done that.
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Leafly’s comprehensive review of THC vape cartridge rules in the 15 legal cannabis states found loopholes where chemicals of concern can get in.
A Leafly investigation into current and forthcoming regulations around THC vape cartridges in the 15 legal cannabis states reveals that more than a year after the vape lung (also known as EVALI or VAPI) crisis, a few states have banned vitamin E oil, but not a single state upgraded its THC vape cartridge testing requirements up to the standard currently required for all nicotine vape cartridges in Europe and Canada.
State cannabis regulators have generally done a great job of protecting the health of consumers by requiring tests for toxins like pesticides, residual solvents, heavy metals, mold, and bacteria. Manufacturers are also required to test and disclose the exact potency of every product on the label.
But sometime around late 2018, THC vape cartridges escaped