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How accurate are test meters?

etippelt

Member
Messages
8
Type of diabetes
Type 2
I have a Glucomen LX as my primary test machine, and recently received a Glucomen GM as an "upgrade" from Menarini. I also have a Bayer Breeze II.

When the GM first arrived, I was curious to compare the results on the same "puncture" so tried them one immediately after the other. The LX indicated 8.9 and the GM indicated 9.5, which is a significant difference. On another day, I lined up all three machines, got a decent sized drop of blood, and took a reading on each machine in turn. The Breeze showed 8.3, the LX showed 8.6 and the GM showed 8.8 - so on this occasion the Menarini machines were a little closer but nevertheless, the spread of readings was still quite substantial.
All machines were at room temperature, and all have in-date strips.
Can anyone tell me if this level of inaccuracy is to be expected from these machines? It does seem a rather high spread of readings from what should be an identical sample.
 
Actually, not a bad spread! The official litatiom on these meters is 20% - I know, ridiculous! But there it is. I've had a discussion with Bayer, and their tested tolerance (worst, it varies according to BG level) is 5%. Your deviation is in this sort of range (5%'ish) so OK Our meters are rely there to tell us if we've been really bad or really good, so I guess they're near enough.
 
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