I like the idea 💡👍 small suggestion though... probably not worth a dime, but... Instead creating Glucose Ketone Index (GKI), perhaps Ketone Glucose Index (KGI) would be more intuitive to read. What I mean by that is to avoid imho counter intuitive measueres like this: "Lower GKI values indicate deeper ketosis". It's like saying "the lower the number on speedometer, the faster you go". Hope you know what I mean. So, if KGI=1/GKI then "Higher KGI values indicate deeper ketosis." Anyway, just out of curiosity, where the number 18 come from?