From the time we started pumping/CGMing we have had an issue with our A1C being no where near what the Meter/CGM would suggest it should be. Up to now, we have always used the Contour Link meters that came with our pump - it's just so convenient because, you know, they link with the pump and I cannot trust my almost teenager to enter the BG manually! Anyway, I read a thread a few months ago that pointed to the Freestyle Lite / Freestyle Freedom Lite meters being almost 100% accurate in meter/lab comparisons and I thought ... as soon as my current supply of strips is out, I'm getting me one of those meters. I picked it up this week and we did some testing. Two tests / same blood sample for each test one minute apart:- Contour Link: 5.9/106 Freestyle Lite: 6.7/120 Percentage Difference: 12.7% one minute later Contour Link: 5.3/95 Freestyle Lite: 6.7/120 (What!! I've never had the Contour give me the same result on two different blood samples) Percentage Difference: 21.5% two minutes later on me (non-D) Contour Link: 3.9 / 70 Freestyle Lite: 4.9/ 88 Percentage Difference: 22.7% We have done more simultaneous tests since then and every time, the Contour is almost a point (18 points) lower than the Freestyle - it has never been even close! Obviously these aren't lab tests but I've been suspicious for a while that the contour meters have been reading lower. However, we have our meters compared with the lab blood test every 4 months and, apart from once a year or so ago, they always pass. I'm grumpy - basically we've been using crappy meters for three years. I didn't realise the 20% either way variant was for every test!!! So basically for three years we have been overtreating "lows" that weren't lows and not treating highs as aggressively as we should have been. Funnily enough back at the beginning when I was always trying to get his average down, if I had to verify a high I wouldn't do it on his main meter in case I messed with the average so I would test with his Precision Xtra and every time it would be up to 2 or 3 (50) points higher! I always assumed the Precision Xtra was rubbish .... duh! Has anyone else noticed this? I never really took the 20% variance seriously until now that I have realised what a huge impact it has had on his A1C. Anyway, anyone else out there with A1Cs that never match up - look to your meter. That's my rant done. If it helps anyone else question their meter accuracy then I hope it was worth the post.