Evaluation of Cannabis Per Se Laws: A Semi‐Mechanistic Pharmacometrics Model for Quantitative Characterization of THC and Metabolites in Oral Users

Abstract Recreational cannabis use has increased notably in the United States in the past decade, with a recent surge in oral consumption. This trend has raised concerns about driving under the influence. Current cannabis‐impaired driving laws lack standardization, with some states implementing blood Δ9‐tetrahydrocannabinol (THC) per se limits (1, 2, and 5 ng/mL). However, these limits have been criticized for their inaccuracy and unreliability, highlighting the need for legal refinement. Addressing this issue requires understanding the complex pharmacokinetics (PK) and