Nevada cannabis testing requirements

Required tests

• Potency
• Terpenes
• Pesticides
• Residual solvents
• Heavy metals
• Microbials
• Mycotoxins
• Water activity
• Moisture
• Foreign matter
• Homogeneity

ISO/IEC 17025 accreditation

Required within a set period. 12 months: a licensed lab must become ISO/IEC 17025 accredited, by an ILAC MRA signatory, within 1 year after licensure (NRS 678B.290(4); NAC 678B.536).

Notes

• Testing rules: NAC 678B.530 to 678B.575 (formerly NCCR Regulation 11). The NCCR were codified into NAC chapters 678A to 678D; the CCB published an NCCR-to-NAC index in June 2026.
• Microbials: total yeast and mold, Enterobacteriaceae, total coliform, Salmonella, pathogenic E. coli and Aspergillus (fumigatus, flavus, niger, terreus); edibles and liquids add total aerobic count.
• Heavy metals: arsenic, cadmium, lead, mercury. Mycotoxins: total aflatoxins and ochratoxin A, each under 20 µg/kg.
• Pesticide screening covers herbicides and growth regulators. A pesticide not on the Nevada Department of Agriculture list fails; pesticide retests are run by that department (NAC 678B.563, 678B.569).
• Flower: moisture content under 15%. Edibles and liquids: water activity under 0.86 or pH under 4.6 (either).
• Potency: THC, THCA, CBD, CBDA and CBN. Terpene analysis (10 named terpenoids) is required for flower, pre-rolls and wet cannabis for extraction.
• In flux: adopted regulation R152-24, approved by the Legislative Commission in September 2026, takes effect when filed with the Secretary of State; it raises the minimum flower sample from 10 g to 20 g and revises lab rules.
• Pending: proposed R104-26 (public hearing October 15, 2026) would implement SB 157 (2025) with ASTM D8334 sampling and a 60 g flower sample (20 g test, 20 g retest, 20 g retention).