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Puzzled....

Further to the above (RTFM time), the flimsy sheet of instructions with HD Codefree contains a statistical analysis based on 174 comparisons (for >4.2 mmol/L) with a proper lab machine which concludes:

39% results within +/- 5%
66% within +/- 10%
88% within +/- 15%
98% within +/- 20%

There is also a control solution available as a separate item, I might get some.
 
yep..it's a lucky dip on the numbers

and we were wrong on the 5.8 and 7.2
for +/- 20% for a reading of 6, the strips can be 4.8 to 7.2
 
Thank you all for your replies and input. It is very interesting. I can understand some variation between meters, but while it is not THAT important to me (no medication), for someone who has to adjust their meds according to the reading a big variation of readings can make their adjustments rather difficult (and potentially the impact of the medication less effective).

I have tried to take blood without squeezing my finger. Washed the hands in warm water, let the arm hang down, pricked myself and nothing happened. As I said, I've got thick skin. I massaged the finger downwards and finally managed a tiny drop. Enough for a reading of 5.0 (AccuChek). Then had a banana with Quark, 1 crispbread with pate and one hour later it was 6.1. I'm happy with those readings.

I'll stop comparing meters now. No good getting too confused. Will use the AccuChek strips until they've gone and then move over to the Codefree.
 
Gudrun said:
I know we shouldn't squeeze the fingers, but I have thick skin and unless I squeeze it, nothing comes out. But that is why I always make sure I have a big drop of blood to test from, so that whatever else comes out with the blood (and I remember reading about that somewhere, too), is kind of diluted.
Click to expand...

Good morning Gudrun!

Well at last I have found an advantage to taking Warfarin...my blood is 2.5 times runnier than most peoples, so it just flows! No squeezing, no pulling. How good is that?!!! Not worth the endless itching and appointments with the nurse to get my levels checked though.:)
 
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