Just a note about false readings. A diabetic with high glucose is deeply uncomfortable, and will suffer long term damage, but is not in immediate peril. The bi

Just a note about false readings. A diabetic with high glucose is deeply uncomfortable, and will suffer long term damage, but is not in immediate peril. The bigger danger is being low, which will lead to unconsciousness, coma, and death. Insulin brings down blood glucose. Getting insulin when not needed can be deadly. (It's a favorite of murder mystery writers.) False highs are more of a risk than false lows. Which means you may need to administer sugar to a diabetic in an emergency. But unless you're a medical professional you will never need to give them insulin.