Pennsylvania DUI attorney Justin J. McShane, Esq. presents his lecture “Defending DUI Drug Cases” in Hartford, CT in December 2009. In Part 2: “Drug Identification and Quantification,” expert DUI Attorney McShane details the difference between impaired and metabolite states, and explains why “the numbers by themselves are junk.” The McShane Firm is the premiere DUI/DWI law firm in Harrisburg, PA. For more information, visit www.themcshanefirm.com Video production by JenKev Productions.