Siemens ADVIA 2120, Operator'S Manual, Page: 158 / 477

6-40 Flags
Perox Temperature out of Range (PXTO, TX)
Definition
The Perox Temperature Out of range flag is triggered if the Peroxidase reaction
chamber temperature is not between 58°C and 72.1°C.
The PXTO (TX) flag is not triggered if agreement between the baso and perox
results is indicated by both the following conditions:
•
WBCB and WBCP agree within specified limits (No WBC-CE flag)
•
[(%NEUT + %EOS) - %PMN] is between 0 and 7.5
Results Flagged
WBCP, %NEUT, #NEUT, %LYMPH, #LYMPH, %MONO, #MONO, %EOS,
#EOS, %LUC, and #LUC
Corrective Action
1. Check the perox reaction chamber temperature.
2. Check the reaction chamber temperature controller, including the electrical
connection.
Platelet Noise (PLT-NO, NT)
Definition
The PLT-NO flag indicates the presence of sample interferences such as
microcytes or RBC fragments that could be counted as large platelets
The PLT-NO flag is triggered under either of the following conditions:
•
LPLT and ANISO flags are triggered (any severity level).
•
LPLT and MICRO flags are triggered (any severity level).
Normal Sample PLT-NO Flag
RBC Scatter
Platelet Vol
RBC Scatter
Platelet Vol