Mindray BC-2800, Operator'S Manual

Page: 45 / 286

Understanding the System Principles
3-7
„ WBC histogram
Besides the parameters mentioned above, this analyzer also presents a WBC histogram,
whose x-coordinate represents the cell volume
（
fL
）
and y-coordinate represents the number
of the cells. The histogram is presented in the
Analysis Result
area of the “
Count
” screen
when the analysis is done. You can also review the histograms of the stored patient results
(see
Chapter 7 Reviewing Sample Results
).
The first three discriminators of the WBC histogram can be adjusted in case you are not
satisfied with the result. Note that you cannot adjust them if the WBC result is less than 0.5 or
out of the operating range.
3.4.4 HGB
Using the colorimetric method, this analyzer calculates hemoglobin concentration (g/L) as
follows.
HGB (g/L)=Constant×
Log
10
(Blank Photocurrent/Sample Photocurrent)
100
WBC % Lymph
# Lymph
×
=
100
WBC % Mid
# Mid
×
=
100
WBC % Gran
# Gran
×
=