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CELL-DYN
3000 System Operator’s Manual
3-21
9140240E — May 1995
Chapter 3 Principles of Operation
HCT
The Hematocrit (HCT) is the ratio of red blood cells to plasma and is
expressed as a percentage of the whole blood volume. The HCT is
calculated from the red blood cell count and the mean cell volume as
follows:
HCT = (RBC x MCV)/10
MCH
The Mean Corpuscular Hemoglobin (MCH) is the average weight of
hemoglobin contained in the red blood cell expressed in picograms. The
MCH is calculated from the RBC and the HGB as follows:
MCH = (HGB/RBC) x 10
MCHC
The Mean Corpuscular Hemoglobin concentration (MCHC) is the ratio
of the weight of hemoglobin to the volume of the average red blood cell
expressed in grams per deciliter. It is calculated from the HGB and the
HCT as follows:
MCHC = (HGB/HCT) x 100
RDW
Red Cell Distribution Width (RDW) is a measure of the heterogeneity of
the RBC population. RDW is a coefficient of variation of the MCV
expressed as a percent (%). The RDW is derived from the RBC
histogram using the 20th and 80th percentiles.
RBC Flagging
Operational Messages and Data Flagging
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Содержание CELL-DYN 3000
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