California has no per se THC limit, and the pharmacology explains why. Blood THC falls fastest when effect is still rising, and frequent users carry measurable levels long after any effect.
A cannabis DUI framework separating proof of prior use, recent use, driving-time impairment, and crash causation using toxicology, SFST, and crash-risk research.
Read Article: Cannabis DUI Evidence: Four Questions That Must Remain Separate
A practical worksheet for comparing original and amended toxicology reports, tracking changed findings, and organizing focused laboratory follow-up.
Read Article: Amended Toxicology Reports: A Version Comparison Worksheet
Review nitazene assay coverage, reporting limits, collection timing, and retained specimens before treating a negative result as evidence of no exposure.
Read Article: A Negative Nitazene Test: What Counsel Should Establish Before Relying on It