Beckman Coulter COULTER LH 750 System, Справочник

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PN 4277248DD
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OPERATION PRINCIPLES
XB ANALYSIS
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See the Glossary for terms used with the XB Analysis.
XM Analysis
XM Analysis is a quality-control method that uses an Exponentially Weighted Moving
Average (EWMA) of CBC, Diff, NRBC and Reticulocyte Parameters and compares them with
with known target values, to monitor instrument performance. The first form of moving
average statistical analysis in hematology was XB Analysis.
Extended QC
Extended QC Rules are derived from the German Quality Control Guidelines for the Medical
laboratory, known in Germany as Rili-BÄK. Rili-BÄK (Guidelines of the Federal Chamber of
Physicians), was first published in 1987 and amended in 1990 and 1993 covering clinical
chemistry, immunochemistry and other tests, but not hematology. In 2003, the guidelines
were extended to include hematology.
Users can enable/disable Extended QC Rules for 5C Cell control.
Table 3.1 Effect of Directly-Measured Parameters on the Red Cell Indices
Index Directly-Measured Parameter
MCV RBC HGB
Increased Decreased Increased Decreased Increased Decreased
MCV HIGH LOW NORMAL NORMAL NORMAL NORMAL
MCH NORMAL NORMAL LOW HIGH HIGH LOW
MCHC LOW HIGH LOW HIGH HIGH LOW