ABX Pentra 80 RAB108EA, User Manual

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Pentra 80
8–12
Pentra 80 - User Manual - RAB108EA
Tab. 8–12: Accuracy table
3.7. Leukocyte differential count
Data from 200 samples for Leukocyte Differentiation was collected in accordance with the
recommended NCCLS guidance documents:
Tab. 8–13: Leukocyte differentiation table
Laboratory Standards (NCCLS) documents: Reference Leukocyte Differential (Proportional)
and Evaluation of Instrumental Methods, Approved Standard , NCCLS document H20-A (ISBN 1-
56238-131-8), 1992.
3.8. Sample stability study
In accordance with the ICSH guidance, 10 samples were collected from the routine laboratory
workload (5 normal samples and 5 abnormal samples). The samples were divided into 2 ali-
quots, one of which was stored at room temperature, and one at 4 degrees centigrade. Sample
stability was assessed over a 72 hour period.
The following results were obtained :
Parameter R² (Comparison of means) Accuracy Claims
WBC 0,99 >0,95
PLT 0,99 >0,95
RBC 0,95 >0,95
HGB 0,99 >0,95
HCT 0,96 >0,95
Lympho 0,94 -
Neutro 0,97 -
Mono 0,81 -
Eosino 0,96 -
Baso 0,4 -
Lympho % Neutro % Mono % Eosino %
AGREEMENT (%) 92,5 85,5 74 97
FALSE POSITIVE RATIO (%) 2,3 2,2 20,6 1,6
FALSE NEGATIVE RATIO (%) 44 41,9 47,5 33,3