Beckman Coulter COULTER LH 750 System, Reference

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PN 4277248DD
3-17
OPERATION PRINCIPLES
PARAMETERS AND THEIR DERIVATION
3
NRBC # (Nucleated Red Blood Cells)
A parameter that is calculated from the NRBC % and the total WBC count. NRBC # represents
the total number of nucleated Red Blood Cells.
NRBC (10
3
cells µL) = NRBC% / 100 x WBC count
Differential (Diff)
Diff Percentages (DIFF%)
The percentages of leukocytes from each category are derived from the DataPlot.
Diff Absolute Numbers (DIFF#)
The absolute numbers of leukocytes in each category are computed from the WBC count and
differential percentage parameters.
NE% =
no. of cells inside NE area
no. of cells inside NE + LY + MO + EO + BA
100
×
LY% =
no. of cells inside LY area
no. of cells inside NE + LY + MO + EO + BA
100
×
MO% =
no. of cells inside MO area
no. of cells inside NE + LY + MO + EO + BA
100
×
EO% =
no. of cells inside EO area
no. of cells inside NE + LY + MO + EO + BA
100
×
BA% =
no. of cells inside BA area
no. of cells inside NE + LY + MO + EO + BA
100
×
NE (103 cells / L) = NE%
100
WBC count µ ×
LY (103 cells / L) = LY%
100
WBC count µ ×
MO (103 cells / L) = MO%
100
WBC count µ ×
EO (103 cells / L) = EO%
100
WBC count µ ×
BA (103 cells / L) = BA%
100
WBC count µ ×