Fig. 2

Saliva collection protocol for the BokaFlo™ and passive drool test (PDT). Saliva collection protocol demonstrating methodology used to assess subject salivary flow as measured with BokaFlo™ and PDT. a Participants cleared their mouth of any existing saliva, opened their mouth and the BokaFlo™ disposable device was placed under the participant's tongue for 3 s. b The disposable device was placed on the BokaFlo™ instrument, removed, and another disposable device placed on the instrument to tare. Subjects were then asked to allow saliva to pool in mouth for 60 s. The second BokaFlo™ disposable device was placed under subjects’ tongue for 3 s and then placed on BokaFlo™ instrument. BokaFlo™ instrument displays salivary flow as milliliters/minute (ml/min). c The PDT was performed by first having subject clear mouth of saliva, then allowing saliva to passively flow into the saliva collection tube for 5 min while sitting upright and with their head tilted forward and down. Resulting PDT rendered saliva flow as ml/min