Specifications
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MPV (Mean Platelet Volume)
Giant platelets
Large platelets counted as RBCs will fall outside the PLT range and therefore
lower the MPV.
Small erythrocytes
Very small RBCs might fall into the PLT region and might be counted as PLTs
and therefore influence the MPV parameter. (This effect is minimized in the in-
strument due to its floating threshold system)
Agglutinated erythrocytes
This may trap platelets and therefore affect the MPV parameter. Note that agglu-
tinated erythrocytes may be detected by carefully examine the MCHC parameter
and/or the stained blood film.
Chemotherapy
May also effect the size of the PLTs
EDTA
Note that all samples collected in EDTA will not maintain a stable MPV. The
PLTs will swell as a function of time and temperature.
LYMF (Lymphocytes)
The lymphocyte count is derived from the WBC count. The presence of nucleat-
ed red cells (NRBC), certain parasites and erythrocytes that are resistant to lysis
may interfere with LYMF count.
MID (MID sized area)
The mid size area consists mainly of Monocytes. The presence of large Lympho-
cytes, atypical lymphocytes, blasts, and excessive number of basophils may inter-
fere with the MID area.
GRAN (Granulocytes)
The granulocyte cell count is derived from the WBC count. The presence of ex-
cessive numbers of metamyelocytes, myelocytes, promyelocytes, blasts and plas-
ma cells may interfere with an accurate granulocyte count.
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