Siemens ADVIA 2120, Operator'S Manual, Page: 314 / 477

Methods 8-45
1 60 fL volume marker
2 2120/2120i fL volume marker
3 28 g/dL HC marker
5 41 g/dL HC marker
Markers organize the cytogram into 9 distinct areas of red blood cell
morphology.
On the x axis, hemoglobin concentration markers are set at 28 g/dL (3) and
41 g/dL (4).
Red blood cells with a hemoglobin concentration less than 28 g/dL are
hypochromic, while cells with a hemoglobin concentration greater than 41 g/dL
are hyperchromic.
On the y axis, RBC volume markers are set at 60 fL (1) and 2120/2120i fL (2).
Red blood cells with a volume less than 60 fL are microcytic, while cells with a
volume greater than 2120/2120i fL are macrocytic.
RBC Matrix
The RBC Matrix provides the cell counts and percentages for the nine regions of
the RBC V/HC cytogram.
NOTE:
Analysis of the RBC Volume and RBC HC histograms provides a
quantitative analysis of the red blood cell populations. Additional, qualitative
information concerning these red blood cell populations can be gained from
simultaneous analysis of volume and hemoglobin concentration using the RBC
V/HC cytogram.