FUNCTIONAL DESCRIPTION
9-22 Sysmex KX-21 Operator’s Manual -- Revised October 1998
3. RBC Histogram Error Flag
When RBC histogram is not normal, a histogram error flag is added to the
corresponding parameter of the analysis value. Those histogram error flags are listed
in the order of higher priority. When two or more flags are applicable to a parameter,
the highest-priority flag is used.
RL: Relative frequency for LOWER discriminator (LD) exceeds the range. Probable
cause is the effect of noise, RBC morphological change, platelet coagulation, or
the like.
RU: Relative frequency for UPPER discriminator (UD) exceeds the range. Probable
cause is the effect of noise.
MP: Two or more peaks in histogram.
DW: Particle distribution width error for 20% frequency with the peak taken as 100%.
When the 20% frequency does not cross the histogram two times, this flag is
attached.
• Matching of eight kinds of RBC histogram error flags
RBC Histogram Error Flag Output
[1] [2]
[1]: Output flag to LCD screen, built-in printer.
[2]: Output flag to serial interface (if incorporated as option).
O
: • When analysis results of LD and UD are normal
• In the case of DW, when RDW-SD could be analyzed
• In the case of MP, when RBC histogram has a single peak
High: Frequencies of LD and UD are higher than the range
×: • In the case of DW, when RDW-SD could not be analyzed
• In the case of MP, when RBC histogram has two or more peaks
: Any of "
O
," "×," and "High" is applicable.
Case
No.
LD UD DW MP RBC HCT MCV MCH MCHC PLT
RDW
-SD
HOST
1A
1B
1C
2A
2B
2C
3
4
High
High
High
O
O
O
O
O
High
High
High
O
O
O
×
×
O
O
×
O
O
×
O
×
RL
RL
RL
RU
RU
RU
RL
RL
RL
RU
RU
RU
RL
RL
RL
RU
RU
RU
RL
RL
RL
RU
RU
RU
RL
RL
RL
RU
RU
RU
RL
RL
RL
RU
RU
RU
RL
DW
MP
RU
DW
MP
DW
MP
RDW
-CV
RL
RL
MP
RU
RU
MP
MP
1
1
1
2
2
2
3
4
O
×
Table 9-6-2: RBC Histogram Error Flags
NOTE: • Since CBC8 parameters only are output in the pre-diluted mode, a flag
is not output to RDW-SD or RDW-CV.
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