So my quite high glucose has prompted a prescription for a FreeStyle Libre Continuous Glucose Monitor.
These things are neat! However, under a section in the user's guide "What to Know About Interfering substances such as Vitamin C and Aspirin" it
Taking ascorbic acid (vitamin C) while wearing the Sensor may falsely raise Sensor glucose readings.
Aspirin may falsely lower readings.
This is interesting on several levels.
First, I take 20 grams of vitamin C. It is possible that some of my highly elevated readings are due to the vitamin C, rather than a real reading of glucose. I did notice in the hospital, where I generally take a lot less C, they have an easier time controlling my blood "sugar."
Second, if it does indeed read vitamin C - like the Free Style Lite we used in the bioavailability experiments, I have a great way to repeat
the experiments - without having to poke my finger every minute.
The first question is whether it will react to vitamin C, and I may try to find out tomorrow morning
If it is sensitive, than a) I need some kind of adjustment to account for the C and estimate my real glucose, and b) we'd have a tool for measuring vitamin C, e.g., after a topical application of a vitamin C serum...