Diatron Abacus junior 30 - Hematology Parameters Measured

OPERATING PRINCIPLES
26
4.3. Parameters
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measures and calculates 18 parameters, while
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12 parameters only. Differences: LYM, MON, GRA, LYM%, MON%, and GRA%.
For each parameter we list the name, abbreviation and measurement unit in the first
column. Short description for each parameter is in the second column.
White Blood Cells – WBC
(cells/l, cells/µl)
Number of leukocytes
WBC = WBC
cal
x counted WBC (cells/l, cells/µl)
Red Blood Cells – RBC
(cells/l, cells/µl)
Number of erythrocytes
RBC = RBC
cal
x counted RBC (cells/l, cells/µl)
Hemoglobin concentration - HGB
(g/dl, g/l, mmol/l)
Measured photometrically at 540 nm; in each cycle blank
measurement is performed on diluent
HGB = HGB
cal
x (HGB
measured
– HGB
blank
)
Mean Corpuscular Volume - MCV
(fl)
Average volume of individual erythrocytes derived from
the RBC histogram.
Hematocrit – HCT
(percentage, absolute)
Calculated from the RBC and MCV values.
HCT
percentage
= RBC x MCV x 100
HCT
absolute
= RBC x MCV
Mean Corpuscular Hemoglobin – MCH
(pg, fmol)
Average hemoglobin content of erythrocytes, calculated
from RBC and HGB values.
MCH = HGB / RBC
Mean Corpuscular Hemoglobin
Concentration – MCHC
(g/dl, g/l, mmol/l)
Calculated from the HGB and HCT values.
MCHC = HGB / HCT
absolute
Unit of measurement is displayed according to the one
chosen for HGB result (g/dl, g/l or mmol/l)
Red Cell Distribution Width – RDW-SD
(fl)
Platelet Distribution Width – PDW-SD
(fl)
Red cell Distribution Width – RDW-CV
(absolute)
Platelet Distribution Width – PDW-CV
(absolute)
The distribution width of the erythrocyte or platelet
population derived from the histogram at 20% of peak
xDW-SD = RDW
cal
x (P2 - P1) (fl),
xDW-CV = RDW
cal
x 0.56 x (P2 - P1) / (P2 + P1)
by the factor of 0.56 CV is corrected to the 60% cut
Platelet – PLT
(cells/l, cells/µl)
Number of thrombocytes (platelets)
PLT = PLT
cal
x counted PLT (cells/l, cells/µl)
Mean Platelet Volume – MPV
(fl)
Average volume of individual platelets derived from the
PLT histogram
Thrombocrit – PCT
(percentage, absolute)
Calculated from the PLT and MPV values
PCT
percentage
= PLT x MPV x 100
PCT
absolute
= PLT x MPV
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:
:
White blood cell 3-part differential:
LYM, LYM% : lymphocytes
MON, MON% : monocytes and some
eosinophils
GRA, GRA%: neutrophil granulocytes
Absolute values counted in the channels determined by
the three WBC discriminators:
Percentages calculated from the absolute WBC value.
GRA
LYM
1.
2.
MON