Specifications include, but are not limited to: A. Chemical Analysis The Contractor agrees to perform analysis of urine specimens submitted by the CDCR throughout the state. Specimens submitted to the Contractor will be screened for the presence of any of the groups of drugs at the minimum levels of concentration shown in Exhibit A-1, Drug Screening Cut-Off Levels, attached hereto and incorporated herein. The State retains the option to delete, add or substitute the drugs herein mentioned, and may re-negotiate the per-test cost, provided that an increase in the per-test cost will not exceed ten percent of that originally bid by the Contractor. B. Testing Laboratory Procedures The Contractor specifically agrees to the following: 1. Use an immunoassay as the initial screening process to identify negative specimens and to select presumptive positive specimens that will be confirmed at the cut-off levels listed in Exhibit A-1. Lower cut-off levels are acceptable. 2. Use a specific chromatographic technique for confirmation of presumptive positive results. 3. Use a hydrolysis step, specifically for opiates and cannabinoids, to liberate the analytic prior to confirmation by the chromatographic method. C. Specimens The Contractor shall conduct analysis using the cut-off levels shown in Exhibit A-1. The testing of a specimen will require that the sample submitted be separated into two portions and that one such portion be analyzed. The second portion of any specimen which has been confirmed to be positive shall be securely stored and frozen at -20 (minus twenty) degrees Centigrade or lower for one month for DAI to assure availability for re-testing in case of a challenge. Negative specimens may be discarded two weeks following the date the results were reported to the provider. Upon notification of a legal challenge, the Contractor agrees to maintain storage of identified specimens for an indefinite period. Additional testing may be required on case-by-case basis. The Contractor agrees to provide testing for Synthetic Tetrahydrocannabinol (Synthetic THC; i.e. Spice), Ethyl Glucuronide (EtG), and Fentanyl on a case-by-case basis. If additional testing is required, it shall be authorized by a staff person at the level of Facility Captain or above. In this event, the Institution will contact the Contractor.