West Virginia Code Chapter 17C. Traffic Regulations and Laws of the Road § 17C-5-12. Report to the Legislature

(1) Recommendations for the minimum levels of those drugs or controlled substances contained in § 17C-5-8(d) of this code, that must be present in a person's blood in order for the test to be admitted as prima facie evidence that the person was under the influence of a controlled substance or drug in a prosecution for the offense of driving a motor vehicle in this state; and

(2) Recommendations for the minimum levels of those drugs or controlled substances contained in § 17C-5-8(d) of this code, that laboratories approved to test blood for drug or controlled substance content can reliably identify and measure for the concentrations of drugs, controlled substances and their metabolites, in blood.