Section 518 - Designated laboratory; rule making authority of the Commissioner(a) The Department of Health shall designate laboratories to test body fluids or materials for drugs. Such laboratories must be able to document competency in regard to personnel, quality assurance programs, methodology and equipment, on site confirmation of positive screening tests, security, confidentiality, and expert testimony.(b) A laboratory that fails to comply with the provisions of this subchapter relating to the confirmation and reporting of test information and the release of confidential information shall lose its designation under this subsection.(c) The Commissioner of Health shall adopt rules pursuant to 3 V.S.A. chapter 25 establishing nontherapeutic levels of therapeutic drugs by establishing a range of values considering average medical use for each particular drug or metabolite authorized to be tested under this subchapter.