As of November 8, 2019, recent CDC laboratory testing of bronchoalveolar lavage (BAL) fluid samples (or samples of fluid collected from the lungs) from 29 patients with EVALI submitted to CDC from 10 states found vitamin E acetate in all of the BAL fluid samples. Vitamin E acetate is used as an additive in the production of e-cigarette, or vaping, products.

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This is the first time that we have detected a potential chemical of concern in biologic samples from patients with these lung injuries.CDC continues to recommend that people should not use e-cigarette, or vaping, products that contain THC, particularly from informal sources like friends, or family, or in-person or online dealers.

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