4 – 24. Drug testing supplies a. Commanders will maintain enough drug testing supplies on hand to test 100 percent of their unit strength. b. Installation ASAPs should maintain enough drug testing supplies to last for at least 30 days at normal consumption rates, based on demand history, in order to maximize commanders drug testing throughout the deployment support cycle, and mitigate disruptions in the supply chain. DTCs should resupply units based on the number of specimens they turn in. UPLs must avoid supply activities that may tip off a test, such as walking through the unit area with the supplies they just received from the DTC. c. The complete list of drug testing supplies is in appendix E. d. Specimen collection bottles and specimen cups must be accounted for and stored in a secured facility to prevent wrongful use and to maintain the integrity of the specimen collection vessels.