Myeloperoxidase Deficiency (Mpo-D, Mo) - Siemens ADVIA 2120 Operator's Manual

Myeloperoxidase Deficiency (MPO-D, MO)

Definition
Sample is a weak peroxidase stainer.
This flag is triggered if [%PMN - (%NEUT + %EOS)] ≥ 25, the NRBC flag was
not triggered, and there is a valid MN-PMN valley (d/D ≥ 0.15).
You must perform a manual differential on samples that trigger the
Myeloperoxidase Deficiency flag.
Because %PMN - (%NEUT
+%EOS) is close to 0, there is no
flag.
By inspection, the sum of the
events in the NEUT (
( ) areas appears approximately
2
equal to the count in the PMN
area (
Results Flagged
%NEUT, #NEUT, %LYMPH, #LYMPH, %MONO, #MONO, %EOS, #EOS,
%BASO, #BASO, %LUC, and #LUC
Flags
Normal Peroxidase Staining
Perox Cytogram
Baso Cytogram
) and EOS
1
).
3
Weak Peroxidase Staining
(MPO flag)
Perox Cytogram
Baso Cytogram
Because %PMN − (%NEUT
+ %EOS) is greater than 25,
the flag is triggered.
By inspection, the sum of the
events in the NEUT (
1
EOS ( ) areas is much less
2
than the count in the PMN
area ( ).
3
) and
6-15