Understanding the System Principles
3-6
HGB(g/L) = Constant×
Log
10
(Blank Photocurrent/Sample Photocurrent)
3.4.3 Derivation of WBC-Related Parameters
WBC
WBC (10
9
/ L) is the number of leukocytes measured directly by counting the white blood cells
passing through the aperture.
Note that NRBCs do not react with the lyse and can be mistaken by the analyzer for white
blood cells. If you observe NRBCs in the microscope, correct the system-generated result by
the following formula,
where WBC represents the system-generated white cell number, NRBC the number of
NRBCs counted in 100 white cells and WBC
′
the corrected white cell number.
WBC
differentia
With the help of the diluent and lyse, this analyzer can size the white cells into three
sub-populations - lymphocytes, mid-sized cells (including monocytes, basophils and
eosinophils) and granulocytes. Based on the WBC histogram, this analyzer calculates Lymph
%
, Mid
%
and Gran
%
as follows and express the results in percents.
where PL
=
particles in the lymphocyte region
(
L
/
10
9
)
PM
=
particles in the mid size region
(
L
/
10
9
)
PG
=
particles in the granulocyte region
(
L
/
10
9
).
Having achieved the three parameters above, this analyzer proceeds to calculate the
Lymph# , Mid# and Gran# per the following equations and express them in
L
/
10
9
.
NRBC
100
100
WBC
'
WBC
+
=
×
L
/
10
n
WBC
9
×
=
100
PG
PM
PL
PL
Lymph%
×
+
+
=
100
PG
PM
PL
PM
Mid%
×
+
+
=
100
PG
PM
PL
PG
Gran%
×
+
+
=
Summary of Contents for BC-2800
Page 1: ...BC 2800 Auto Hematology Analyzer Operator s Manual ...
Page 2: ......
Page 12: ......
Page 24: ...Using This Manual 1 12 Figure 1 4 High voltage warning label 7 High Voltage 7 ...
Page 62: ......
Page 91: ...Customizing the Analyzer Software 5 29 Figure 5 46 Saving changes ...
Page 92: ......
Page 170: ...Using the QC Programs 8 14 Figure 8 18 Transmission dialog box ...
Page 196: ......
Page 248: ......
Page 252: ......
Page 266: ......
Page 284: ...Appendices E 10 Hemoglobin Concentration ...
Page 286: ...P N 2800 20 28795 2 0 ...