The passive drool collection method from Salimetrics features the patented SalivaBio Collection Aid. When paired with the SalivaBio cryovials, participants and patients can easily collect up to 1.8mL of whole saliva on their own without supervision. For applications where more than 1.8 mL is desired, the SalivaBio Collection Aid can be paired with externally threaded cryogenic tubes from Wheaton, Nunc and Greiner Bio One, all of which are readily available. Contact Salimetrics for more information. Passive drool (also called “mixed” saliva) is considered by many researchers to be the gold standard when collecting saliva samples for biological testing, because it provides the purest sample possible and allows researchers to “biobank” samples for future testing. Although collecting whole saliva by spitting or drooling might seem to be easy, it can actually be a messy task that discourages some participants from donating samples. The SalivaBio’s Passive Drool saliva collection method includes everything you need to reduce mess, increase compliance, accelerate sample collection, and preserve sample integrity. Complete with cryovial, saliva collection aid, and sample collection instructions, this saliva collection system is ready to use in the field or on-site.