Blood testing and "minimum detectable limits."

       Pennsylvania's Vehicle Code requires that the State Department of Health promulgate "minimum detectable levels" of various controlled substances before evidence of the influence of those substances may be introduced in a DUI prosecution. See, Minimum Levels of Controlled Substances or Metabolites under 75 Pa.C.S. § 1547(c)(4).

      The person responsible for promulgating those "minimum detectable limits" was Dr. Jeffrey Shoemaker, the Director of the Division of Chemistry and Toxicology in the Department of Health's Bureau of Laboratories. He has testified regarding the promulgated limits and the process, and you can review here his testimony authenticating and explaining the "minimum detectable limits" Notice.