Is it diabetic to hold fast blood sugar at 7.4mmol/l and 2-hour postprandial blood sugar at 5.5mmol/l?
Answer:
Not necessarily; even though a fasting blood glucose plane (BGL) over about 6 mmol/L is unexpected, a 2h postprandial BGL of 5.5 is normal (anything below 7.8 2h post-prandially is considered inside normal limits). However, look at alimentary hypoglycemia when [fasting BGL] > [2h postprandial BGL].
Post prandial lowering of blood glucose is call "dumping syndrome" and occurs as a delayed complication of Gastrojejunostomy a surgical procedure for duodenal sore.
Other reasons can be that the individual have taken blood glucose lowering drugs or insulin after fasting example is collected.