RESOURCES & TUTORIALS Play Video about proof remote drug testing simplified Getting Started Specimen Type Select your PROOF kit type below to see kit-specific video walkthrough and print instructions. SALIVA URINE BLOOD NAIL BREATH Kit Specific Instructions SALIVA URINE BLOOD NAIL BREATH SALIVA Pr Saliva Kit Print Instructions URINE Pr Urine Kit Print Instructions BLOOD Pr Blood Kit Print Instructions NAIL Pr Nail Kit Print Instructions BREATH Pr Breath Kit Print Instructions