The National Highway Traffic Safety Administration offers information about the effects of impairing substances. 2004 Fact Sheet 2024 Fact Sheet
Toxicology
Jan Semenoff, Intoxilyzer Breath Alcohol Testing: Professional Edition
Winek’s Drug & Chemical Blood-Level Data
Reference cited by the NC State Crime Laboratory. Provides the normal, therapeutic, toxic, and lethal blood level for various drugs and their metabolites.
