A mandatory national standard, GB 45248-2025, was published on 28 February 2025 and took effect on 1 September 2025. It sets concentration cutoffs and examination rules for 11 drugs and metabolites, including delta-9 THC. The traffic law already bans driving after taking any state-controlled narcotic or psychotropic drug; the predecessor standard set a blood THC cutoff of 2 ng/mL, but the 2025 table was not readable from the open preview.[1][2]
Listed for context. No score change is recorded for China here.
References
- 国家标准 — GB 45248-2025 车辆驾驶人员体内毒品含量阈值与检验标准状态、发布日期、实施日期
- 准行天下 — GB 45248-2025 内容描述与适用范围适用范围：11种毒品及代谢物，包括Δ9-四氢大麻酚
Checked. The date and the event were compared with a source that was read.