Beckman Coulter COULTER LH 750 System, Reference

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PN 4277248DD
4-6
SPECIFICATIONS/CHARACTERISTICS
PERFORMANCE CHARACTERISTICS
Sample Stability
The following tables show the average results for specimens from five normal donors
collected in K
3
EDTA‡. The specimens were stored at room temperature and cold temperature.
For this study, room temperature was 72 - 73º (22 - 23ºC) and cold temperature was 37 - 39ºF
(3 - 4ºC). Room temperature specimens were mixed for 22 inversions and then immediately
analyzed. Upon removal from the refrigerator, the cold specimens were mixed for 22
complete inversions and analyzed within five minutes
Table 4.7 CBC Sample Stability, Room Temperature‡
Hours WBC RBC Hgb MCV RDW PLT MPV
1 8.45 4.416 13.49 86.4 13.84 248.7 8.59
4 8.75 4.482 13.65 86.8 13.87 249.2 8.76
8 8.76 4.485 13.69 87.9 14.17 247.7 8.68
16 8.94 4.468 13.65 88.5 14.38 256.0 8.78
24 8.81 4.462 13.61 89.5 14.59 261.0 8.96
Table 4.8 CBC Sample Stability, Cold Temperature‡
Hours WBC RBC Hgb MCV RDW PLT MPV
1* 8.45 4.416 13.49 86.4 13.84 248.7 8.59
4 8.54 4.438 13.49 86.3 13.90 252.8 8.64
8 8.59 4.437 13.51 87.0 13.77 244.9 8.65
16 8.65 4.446 13.54 87.1 13.84 240.4 8.80
24 8.71 4.419 13.51 87.5 13.80 235.6 8.96
36 8.68 4.451 13.52 87.5 13.67 232.1 9.07
48 8.48 4.437 13.62 87.8 13.76 227.0 9.21
*Results analyzed @ Room Temperature
Table 4.9 DIFF% Sample Stability, Room Temperature‡
Hours NE LY MO EO BA
1 56.02 34.36 7.45 1.82 0.35
4 55.60 34.76 7.35 1.90 0.39
8 55.15 35.58 7.25 1.63 0.40
16 55.92 35.45 6.68 1.63 0.32
24 56.56 35.25 6.30 1.56 0.33
Table 4.10 DIFF% Sample Stability, Cold Temperature‡
Hours NE LY MO EO BA
1* 56.02 34.36 7.45 1.82 0.35
4 55.96 35.24 6.73 1.73 0.34