QML glucometer reports

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The Telcor/QML glucometer monthly QC reports "Device Performance Summary" has 2 columns of CVs. One is FX the other CA. Does anyone know what FX and CA stand for? My FX CVs are always higher and sometimes >10% and the CA CV is always lower by almost half CV<10% easily. I'm assuming they stand for "fixed" and "calculated"? Are they both equally important or is the CA CV the better gage of CV? Calling Telcor to clarify wasn't much help. I'd appreciate any info.

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FX - fixed or manufacturer's expected
CA - calculated, based on actual control results

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Melisa Wagoner
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