We Tested Vapes in Colorado for Signs of Hemp. This Is What We Found.

OG article by Christopher Osher and Evan Wyloge, The Denver Gazette

January 30, 2026

ProPublica and The Denver Gazette tested 14 marijuana vapes from Denver-area dispensaries for signs of illegal hemp-derived THC substitution. Hemp conversion to THC often produces detectable delta-8/delta-10 THC or solvent residues banned in Colorado marijuana production. Three samples showed significant anomalies: Dutch Botanicals vapes had delta-8 THC (1.1–3.3%); the company faces license suspension over related allegations but denies hemp use. Rockin Extracts showed delta-10 THC and unlisted solvents, attributed by the company to degradation or supplier oil. C2CC's product contained toluene, a hazardous solvent indicative of conversion. Experts called levels over 1% highly suspicious, though some noted possible natural degradation. Findings highlight regulatory gaps, as Colorado lacks robust random off-the-shelf testing despite industry complaints about unfair competition and consumer risks from hemp-derived intoxicants. The state's pilot testing program faces delays due to funding shortages. Results suggest need for stronger enforcement and clearer hemp-marijuana distinctions to protect the regulated market.