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Table 4.5 Definitive Flagging Limits (Continued)
For this
Parameter
RBC
Plt
4.7
MICROSCOPIC REVIEW
If a possible abnormality appears on the report, check the blood film.
If the blood film does not appear consistent with the printed results, check for:
Possible printer or instrument problem.
r
Sample, film or report misidentification.
r
Sample conditions (age, storage, anticoagulant, chemical composition,
r
abnormally small WBCs, clumped platelets).
Limitations of slide preparation, staining and microscopic review.
r
Interfering substances (medications, cryoglobulins or cryofibrinogen crystals).
r
Patient conditions (fragmented WBCs, giant platelets, platelet satellites,
r
lyse resistant RBCs, nucleated RBCs).
PN 4237519CB
This Message
Indicates the Result Exceeds this Limit
1+ Hypochromia
Low limit for MCH
2+ Hypochromia
A gradient range from 1+ Hypochromia
3+ Hypochromia
A gradient range from 2+ Hypochromia
1+ Poikilocytosis
High limit for RDW and Low limit for MCH
2+ Poikilocytosis
A gradient range from 1+ Poikilocytosis
3+ Poikilocytosis
A gradient range from 2+ Poikilocytosis
Erythrocytosis
High limit for RBC
Pancytopenia
Low limit for WBC and RBC and Plt
Thrombocytopenia Low limit for Plt
Thrombocytosis
High limit for Plt
Small Platelets
Low limit for MPV
Large Platelets
High limit for MPV
DATA REVIEW
MICROSCOPIC REVIEW
4-13
4
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