RADIOMETER ABL800 FLEX Operator's Manual page 183

ABL800 FLEX Operator's Manual
General information,
Glossary of The following terms are used in the quality control:
terms
Accepted result
Control range
Insert limits
Lot-to-date range
Measuring range
Statistics factor
Statistics range
For detailed information on terminology and principles for the quality control
systems, please refer to the Quality Control Systems Reference Manual.
NOTICE: In cases where the first blood sample measurement after a measurement on a
QUALICHEK3+/5+ or AutoCheck3+/5+/6+ control solution is to be performed
with HbF correction (either set up for all levels or for FHbF> 20 %), a rinse must
be called prior to the blood measurement to ensure accurate oximetry results.
Continued
Term
A measurement value which falls within the statistics
range.
The range within which a measurement should fall.
Typically the control range is set to be the mean ± 2 SD
(see Quality control setup in chapter 3). This range can be
set using the lot-to-date range (2 SD) calculated by the
analyzer, or it may be user-defined.
Upper and lower control limits, established by Radiometer,
printed in the insert provided with each box of control
solutions.
A range calculated by the analyzer from measurements
taken on a lot of a particular control solution. It is
represented by mean ± 2 SD.
The range for each parameter the analyzer is capable of
measuring. Refer to Measured parameters in chapter 13
for the analyzer measuring range for each parameter.
The factor by which the control range is expanded
(multiplied by) to determine the statistics range. The
recommended statistics factor is 1.5.
The range within which a measurement must fall in order
to be included in the quality control statistics. It is
determined by multiplying the control range limits by the
entered statistics factor. It is typical that the statistics
range is set to the mean ± 3 SD.
5. Quality control
Explanation
5-3