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Re: Re [IPk] Retest results



 Isn't the requirement that the readings are within 20% of the true number, not
each other? So if you were 17 at the time then 15.2 would be -10% and 19.8 would
be +16%. Both of these readings are inside the 20% limit.

Sent from my iPhone

> On 15 Jan 2014, at 22:52, Ingrid Glass <email @ redacted> wrote:
> 
> Hi John, a couple of months' ago I was out with my natural history group,
> always an unknown quantity regarding how active/sedentary the day will be and
> how much energy I'll have to participate & for how long, and following the
> usual pre-emptive big basal reduction + extra carbs for brekkies, horror of
> horrors it was an extremely sedentary morning. I tested 1/2 hour before lunch
> and I was 19.8. I thought I'd better retest before shoving a large correction
> dose in, and it was 15.2! As a result of this, I went through a period of
 > regular double testing to see how often the discrepancy was outside of the
20%
> 'allowable' range, and discovered far too frequently it was significantly off
 > (> 20%) when outside of normal readings (say 4 - 8mmol/L). I started to
really
> distrust my meter!! I have & use 3 of them - One Touch UltraEasy - so it
> wasn't a one-off dud meter. But when I asked my DSN recently, she actually
> assured me that this is one of the most accurate & reliable meters, they use
> it for 'all our pregnant ladies'. I've gone back to single testing and a bit
> of forced artificial confidence (!) after DSN chat, but any highs now & I
> double test.
> 
> Ingrid
> 
> 
> 
> Date: Wed, 15 Jan 2014 09:15:03 +0000
> From: johnfarmitage <email @ redacted>
> Subject: [IPk] Retest results.
> 
> I occasionally retest if I have an unexpected high BG result and have
> noticed
> that it always gives a lower reading of at least 1 mmol/L the second time. It
> must be a meter operation thing, but can anyone explain this? (Before you all
> try, let me buy some drug company shares:) )
> .
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