Oldvatr
Expert
- Messages
- 8,470
- Type of diabetes
- Type 2
- Treatment type
- Tablets (oral)
I agree with your analysis, but it is the opposite of what I said, I know how to convert, thank you. The problem is that the figures given by NICE and DVLA still seem to be for the days of whole blood. so taking my example from the other night, my NEO (whole blood) measured 4,1, my SD Codefree (plasma) read 5,7, and my new CareSense (also plasma) read 5,6. So which is closest to the 3,9 quoted for hypo?why should you apply this? They all use whole blood for testing but they should all now report the results with plasma calibration, It was relevant some years ago, when there was still a mix in the UK with some meters reporting whole blood values and others plasma. This is what I wrote in my blog at the time
"In the UK, the manufacturers have been changing over the years and now according to DUK they all use plasma except for for those made by of of the largest manufacturers Roche ie Accu chek meters. DUK says that ‘ Roche is in the process of adjusting their meters to give results as plasma values, which they hope will be completed before the end of 2009"
Accuchek were, as said the last to change, they didn't change the meter, they changed the strips.(as stated at the end of 2009)
I note though that one of the criteria in the report was that they provided 'plasma calibrated readings' so perhaps some of the newer meters from smaller manufacturers don't have this calibration.
If your meter is by chance whole blood calibrated then you shouldn't be subtracting 12% you should be adding it. The figures used for hypo when I was diagnosed(in France so in mg/dl)) were for a whole blood calibrated meter and were lower than what my doctor would use today
View attachment 21579
Consistently my NEO ties in with my physical symptoms of hypo, but I have had readings above 6 from my Codefree. But it is within the 15% allowed by ISO so is technically reading accurately but giving me a bum note. The Codefree says I can drive, my NEO says I am close to hypo, and shortly after my body proved it. So, should I multiply the data given by Daisy1 by 12%, or divide my plasma readings by 12% each time I measure? I think that the data given to us should be changed so all users of the new plasma meters can relate their measurements to the ranges without having to convert every time, That is my stance unless someone can convince me otherwise.
It is one thing changing meters from one standard to another, but the target information must also change to agree. Abbot meters are not changing, and My NEO from Sept 2016 is definitely whole blood. My XCEED was also wholeblood (2015).
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