How to use the Ketodoc Meter Kit? (Video) September 12, 2019 00:46 Updated Watch the video below to find out how to use the Ketodoc Blood Meter Kit. Related articles What do my Readings mean? What should my ketone reading be? Ketodoc User Manuals What does "899" (or other 3 digit code shown on start) mean? Tips for Testing and Tracking Ketone Levels