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How reliable are HbA1c tests?
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<blockquote data-quote="Lupf" data-source="post: 2264593" data-attributes="member: 518059"><p>Thanks to [USER=310899]@Bill_St[/USER] I found what I was looking for. McCormack and Holmes from UBC, Vancouver, have put a tool on the web, which lets you compare subsequent measurements.</p><p><span style="font-size: 22px"><strong>Your results may vary: the imprecision of medical measurements</strong></span></p><p><a href="https://www.bmj.com/content/368/bmj.m149" target="_blank">https://www.bmj.com/content/368/bmj.m149</a></p><p></p><p>This confirms what I already knew for blood glucose tests as I have a sufficient sample to estimate their variation myself,</p><p>but I now could do the same for my Hb1Ac and it tells me that 42 and 55 mmol/mol are not compatible. This is what I expected and we've discussed possible reasons for this above. For scientists, they give a 95% confidence interval of 42+-8 mmol/mol for the first test.</p></blockquote><p></p>
[QUOTE="Lupf, post: 2264593, member: 518059"] Thanks to [USER=310899]@Bill_St[/USER] I found what I was looking for. McCormack and Holmes from UBC, Vancouver, have put a tool on the web, which lets you compare subsequent measurements. [SIZE=6][B]Your results may vary: the imprecision of medical measurements[/B][/SIZE] [URL]https://www.bmj.com/content/368/bmj.m149[/URL] This confirms what I already knew for blood glucose tests as I have a sufficient sample to estimate their variation myself, but I now could do the same for my Hb1Ac and it tells me that 42 and 55 mmol/mol are not compatible. This is what I expected and we've discussed possible reasons for this above. For scientists, they give a 95% confidence interval of 42+-8 mmol/mol for the first test. [/QUOTE]
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How reliable are HbA1c tests?
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