Do you believe your readings?

I have a Bayer Contour Next USB and the SD Codefree and I have to say that the Codefree has been fairly consistent with the readings from the Contour, although it can sometimes give an erratic reading (as can all meters). The Codefree is certainly good enough for observing trends and working out how certain foods affect you, but for 'important' measurements, the Contour Next probably more reliable. More expensive to run though :-(


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ISO guidelines state that blood glucose meters should provide results which fall between the upper and lower error bounds, given in the table below, 95% of the time:

Within ± 0.83 mmol/L of laboratory results at concentrations of under 4.2 mmol/L
Within ± 20% of laboratory results at concentrations of 4.2 mmol/L or more
ISO guidelines on blood glucose meter accuracy bounds
Test result
given Lower
bound Upper
bound
1.0 0.17 1.83
1.5 0.67 2.33
2.0 1.17 2.83
2.5 1.67 3.33
3.0 2.17 3.83
3.5 2.67 4.33
4.0 3.20 4.80
5.0 4.00 6.00
6.0 4.80 7.20
7.0 5.60 8.40
8.0 6.40 9.60
9.0 7.20 10.80
10.0 8.00 12.00
12.0 9.60 14.40
14.0 11.20 16.80
16.0 12.80 19.20
18.0 14.40 21.60
20.0 16.00 24.00


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Or alternatively, you could find a better way to pass the time…


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i had a similar problem with my contour..
i changed the batteries and it was ok again..
just a thought

charon said:

Before every reading I wash my hands with soap and water and swab the area with rubbing alcohol. I assumed everyone would do this. Concerned about infection as well as contaminating the sample.


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Click to expand...

I was specifically told not to use soap or alcohols rubs before testing, hot water only. Soap contains glycerin which is a sugar and alcohol residue skew readings for other reasons.


Sent from a melting iceberg. help!!!

charon said:

Before every reading I wash my hands with soap and water and swab the area with rubbing alcohol. I assumed everyone would do this. Concerned about infection as well as contaminating the sample.


Sent from the Diabetes Forum App

Click to expand...

I was specifically told not to use soap or alcohols rubs before testing, hot water only. Soap contains glycerin which is a sugar and alcohol residue skew readings for other reasons.


Sent from a melting iceberg. help!!!