I can test the same drop of blood with 3 different meters and get 3 different readings within 30 points of each other. Meters (in the US- not sure about the UK, Canada etc) only have to be 20% accurate by law- so if you get a reading of 100 it can really be as low as 80 or as high as 120. And that range gets numerically larger as the readings go up. The control solutions typically give a 40 point range (so much for control!). And many meters, like scales, lose precision at very high and very low numbers.
I used to drive myself crazy testing different fingers, different meters, different blood drops until I started to read about meters, how they determine your numbers, things that affect the test strips and so forth-
I would only worry if you got one reading of 100 and 1 reading of 250 from the same stab- I find that my One Touch Ultra 2, One Touch Smart, and Bayer Ascensia all read about the same; my Freestyle Flash is always 15-30 points higher than the One Touches, and my Precision Extra is totally variable - my One Touch averages have been closest to my A1c for the last two test periods. I am trying to score a free Ultra Mini and then I am going to retire the FLash and Precision Extra. The software for those two kills my computer too.
I love gadgets- can you tell? sandy
I just want to live happily ever after-every now and then. Jimmy Buffett