Operating Principles B-7
B.4 Measured and Calculated Parameters
Each sample is analyzed to produce a complete, 24-parameter, five-part differential blood count (CBC),
including the following measured or calculated parameters:
WBC — total white blood cell count
LYM — lymphocyte count
MON — monocyte count*
NEU — neutrophil count
EOS — eosinophil count
BAS — basophil count
LYM% — lymphocyte percentage
MON% — monocyte* percentage
NEU% — neutrophil percentage
EOS% — eosinophil percentage
BAS% — basophil percentage
RBC — red blood cell count
HGB — hemoglobin
HCT — hematocrit
MCV — mean corpuscular volume
MCH — mean corpuscular hemoglobin
MCHC — mean corpuscular hemoglobin concentration
RDWc, RDWs (std dev) — red cell distribution width, coefficient of variation
PLT — platelet count
PCT — platelet crit
MPV — mean platelet volume
PDWc, PDW (std dev) — platelet distribution width, coefficient of variation
* The monocyte category consists primarily of monocytes. Impedance counters categorize white blood cell types (differential) according
to size, and therefore a certain percentage of eosinophils may have a mass that falls in the normal range for monocytes (the exact percent-
age depends on the individual animal and is generally inconsequential due to the very low numbers of eosinophils in a healthy animal).
Eosinophilias, however, can sometimes be visualized as a distinct peak between the monocyte range and the granulocyte peak on a histo-
gram.