Retrograde Extrapolation, Does 4 Hour Delay Cause Admissibility Problems?

People v. Epstein, 2022 IL 127824 (November). Episode 971 (Duration 14:32) The BAC test result obtained 4 hours after driving is highly probative regardless of whether retrograde extrapolation may be performed to calculate defendant’s BAC while driving. When Is Retrograde Extrapolation Necessary? Initially, defendant’s argument appears to assume that the BAC test result is admissible […]