A 52-year-old female asked:
are blood sugar home monitors fasting reads just what you ate the day before?
2 doctor answers
Dr. Mark Rasak answered
33 years experience Cardiology
Yes: Fasting blood checks how your sugers are over night and day before. But you should also check post priandial sugers too. Check a sample 2 hrs after lunch and dinner . As a general rule if your sugers are over 200 then your meds need adjusting or you need coverage with a short acting agent. There are home monitors that check a hgba1c which checks a value comissurate with 3 mos controll.
Answered on Feb 27, 2014
Dr. James Ferguson answered
46 years experience Pediatrics
Primarily: Your digestive system is continuously processing foods. The "fasting"level is a good baseline that reflects baseline food processing without the intrusion of recent foods/fluids that may trigger a rapid upswing in blood sugar.It reflects the adequacy of overnight insulin at keeping you in balance.Random blood sugars can vary by the foods sugar content & speed of insulin response.Both are important
Answered on Apr 25, 2017
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