My question is about whether labs have different values because of regents used in processing? My lab report shows 6 as the A1C value and the lab reports show normal value as 6.2. I understand normal values are less than 5.7 but in this case can 6 be considered normal as the lab normal values show until 6.2 normal? I understand fasting is high too. But please restrict you are answer to differences is lab normal ranges.