Drug–testing coordinator The DTC is the individual trained to collect UA specimens from DA Civilians as part of the civilian DTP. The DTC is often a certified DTC, though this need not be the case. A DTC performs similar duties for DA Civilians that the UPLs perform for Soldiers. Drug–Testing Program The DoD DTP is software designed to manage and automate a unit-level substance abuse program. The UPL uses the software to maintain a list of personnel in the unit, randomly select Soldiers for drug testing, and print required forms and bottle labels. DTCs may also use the DoD DTP for managing civilian drug testing.