DNA/RNA Shield Saliva/Sputum Collection Kit - DX are specimen receptacle medical devices for molecular-based in vitro diagnostic applications. This saliva/sputum collection kit also takes a microbial snapshot of a sample while inactivating viruses making samples safe and ready for transport. Samples stored in the DNA/RNA Shield Saliva/Sputum Collection kits are stable at ambient temperature for up to 28 days. This saliva/sputum collection kit simply requires users to deposit specimen saliva into the spit cup, add the DNA/RNA Shield reagent, and shake vigorously to ensure proper stabilization.