I always find it funny that the US uses one system and everyone else uses another. Crazy!

@@HackYourBloodSugar Yes, and it is the opposite of helpful if one is trying to wrap ones limited capacity brain around ofttimes complex physiology, and to try to memorize the ranges and cutoff points in addition to learning and remembering the other criteria and the associated algorithms. That is why it is so refreshing to encounter folks like yourself who put in the extra effort, and in so doing, make your material universal in its usefulness and thus appeal. Please keep up the good work.