Table I.
Treatments performed on the red cell concentrates and results of quality control of the units.
| Units of RCC (total=345) | Treatment process | N. of units (%) | Hb g/unit | Hct % | RPC/unit | R-WBC/unit | Haemolysis |
|---|---|---|---|---|---|---|---|
| 205 | Filtered pre-storage washing | 194/205 (95%) | 40–58 g/U M=53 SD=4.949 |
60–70% M=62 SD=2.577 |
0.1–0.3 g/L M=0.2 SD=0.035 |
0.001–0.01×106 M=0.001 SD=0.002 |
No |
| 11/205 (5%) | 35–39 g/U M=38 SD=0.828 |
50–59% M=52 SD=2.806 |
0.1–0.3 g/L M=0.2 SD=0.070 |
0.001–0.01×106 M=0.001 SD=0.002 |
No | ||
| 78 | Post-storage leucodepletion and washing | 73/78 (94%) |
40–58 g/U M=53 SD=4.949 |
60–70% M=60 SD=2.522 |
0.1–0.3 g/L M=0.19 SD=0.026 |
0.001–0.01×106 M=0.001 SD=0.002 |
No |
| 5/78 (6%) | 35–39 g/U M=36 SD=1.303 |
50–59% M=51 SD=3.535 |
0.1–0.3 g/L M=0.2 SD=0.070 |
0.001–0.01×106 M=0.002 SD=0.004 |
No | ||
| 62 | Post-storage leucodepletion | 57/62 (92%) | 40–58 g/U M=52 SD=5.566 |
60–70% M=63 SD=2.751 |
0.1–0.3 g/L M=0.2 SD=0.070 |
0.001–0.01×106 M=0.001 SD=0.006 |
No |
| 5/62 (8%) | 35–39 g/U M=36 SD=1.414 |
50–59% M=50 SD=0.447 |
0.1–0.3 g/L M=0.2 SD=0.070 |
0.001–0.01×106 M=0.002 SD=0.004 |
No |
Legend: RCC: red cell concentrate; Hb g/unit: haemoglobin (standard value: >40 g/unit); Hct of unit (%): haematocrit of the unit (standard value: 50–70%); RPC/unit: residual protein content/unit (standard value: <0.5 g/L); R-WBC/unit: residual white blood cell count/unit (standard: <1×106); M: mean value; SD: standard deviation.