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Concerns about SD Codefree
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<blockquote data-quote="angieG" data-source="post: 266300" data-attributes="member: 30853"><p>Well in view of the uncertainty I contacted the seller and queried the 'faulty batch of strips'.</p><p>They were not aware of any faults and thus tested some of their remaining batch in stock with satisfactory results. Their reply to me was that the strips were therefore okay but they would send me some testing solution (FOC) to check that my meter was working correctly.</p><p></p><p>I conducted tests with both their testing solutions and some I had for the Freestyle (this is slightly out of date but still shows a comparison between meters as they are both subjected to the same out of date liquid), With their solution I also included my spare Freestyle Lite meter, but with the Freestyle test solution I just compared the SD with the regular Freestyle Lite I use every day. Here are the results....</p><p> </p><p>SD Test Solution</p><p>Low solution..............target on SD test strip pot 5.5 to 7.9 (so mid way would be 6.7)</p><p> SD meter 6.7 (spot on mid way)</p><p> Regular meter 4.7</p><p> Spare meter 4.7</p><p> </p><p>Mid solution..............target on SD test strip pot 9.7 to 14.0 (so mid way would be about 12.8)</p><p> SD meter 11.5</p><p> Regular meter 8.2</p><p> Spare meter 8.7</p><p> </p><p>Freestyle test solution</p><p>Low solution............target on Freestyle test strip pot 2.2 to 3.9 (so mid way would be about 3.1)</p><p> SD meter 3.1 (spot on mid way)</p><p> Regular meter 2.3</p><p> </p><p>High solution...........target on Freestyle test strip pot 13.8 to 20.7 (so mid way would be about 17.8)</p><p> SD meter 19.6</p><p> Regular meter 15.7</p><p> </p><p>Thus the SD appears to be hitting the mid way mark on the solution range far better than my Freestyle Lites so it definitely casts doubt over the accuracy of the Freestyle.</p><p></p><p>I was also sent a chart showing some research that was done I believe in Zurich comparing numerous meters for accuracy over a batch of tests and the Freestyle Lite proved to record much lower results than the majority of other meters. It may be worth checking any meters / strips with control solution and maybe try comparisons with other meters too if you have any doubts about this meter. After doing this experiment I have to admit I am not sure about the readings from my Freestyle Lite meters any more since they were not even in the range on the first test.</p><p></p><p>HTH</p><p>Angie</p></blockquote><p></p>
[QUOTE="angieG, post: 266300, member: 30853"] Well in view of the uncertainty I contacted the seller and queried the 'faulty batch of strips'. They were not aware of any faults and thus tested some of their remaining batch in stock with satisfactory results. Their reply to me was that the strips were therefore okay but they would send me some testing solution (FOC) to check that my meter was working correctly. I conducted tests with both their testing solutions and some I had for the Freestyle (this is slightly out of date but still shows a comparison between meters as they are both subjected to the same out of date liquid), With their solution I also included my spare Freestyle Lite meter, but with the Freestyle test solution I just compared the SD with the regular Freestyle Lite I use every day. Here are the results.... SD Test Solution Low solution..............target on SD test strip pot 5.5 to 7.9 (so mid way would be 6.7) SD meter 6.7 (spot on mid way) Regular meter 4.7 Spare meter 4.7 Mid solution..............target on SD test strip pot 9.7 to 14.0 (so mid way would be about 12.8) SD meter 11.5 Regular meter 8.2 Spare meter 8.7 Freestyle test solution Low solution............target on Freestyle test strip pot 2.2 to 3.9 (so mid way would be about 3.1) SD meter 3.1 (spot on mid way) Regular meter 2.3 High solution...........target on Freestyle test strip pot 13.8 to 20.7 (so mid way would be about 17.8) SD meter 19.6 Regular meter 15.7 Thus the SD appears to be hitting the mid way mark on the solution range far better than my Freestyle Lites so it definitely casts doubt over the accuracy of the Freestyle. I was also sent a chart showing some research that was done I believe in Zurich comparing numerous meters for accuracy over a batch of tests and the Freestyle Lite proved to record much lower results than the majority of other meters. It may be worth checking any meters / strips with control solution and maybe try comparisons with other meters too if you have any doubts about this meter. After doing this experiment I have to admit I am not sure about the readings from my Freestyle Lite meters any more since they were not even in the range on the first test. HTH Angie [/QUOTE]
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