Table 3.
Effect of suboptimal cuvette storage conditions for up to 21 d on measured hemoglobin concentrations (g/L): mean (SD) from 2 readings each
| HemoCue® model | HemoCue® controls | Cuvette condition | Time, d | ||||
|---|---|---|---|---|---|---|---|
| 0 | 1 | 8 | 15 | 21 | |||
| Hb-301 | Level 1 | Referencea | 71.5 (0.7) | 72.0 (1.4) | 72.5 (0.7) | 72.5 (0.7) | 72.5 (0.7) |
| 37°C/humid, closedb | 71.5 (0.7) | 72.5 (0.7) | 71.0 (0) | 71.0 (0) | 71.5 (0.7) | ||
| 37°C/humid, openc | 71.5 (0.7) | 72.0 (0) | 72.5 (0.7) | 72.5 (0.7) | 73.0 (0) | ||
| Level 2 | Referencea | 130 (2.1) | 131 (0) | 132 (0.7) | 130 (0.7) | 131 (0) | |
| 37°C/humid, closedb | 130 (2.1) | 131 (0) | 130 (0.7) | 130 (0) | 130 (0.7) | ||
| 37°C/humid, openc | 130 (2.1) | 131 (0) | 132 (0.7) | 132 (0.7) | 132 (0) | ||
| Level 3 | Referencea | 171 (0) | 172 (0) | 175 (0) | 174 (0) | 175 (0) | |
| 37°C/humid, closedb | 171 (0) | 174 (2.1) | 172 (2.1) | 171 (1.4) | 170 (0.7) | ||
| 37°C/humid, openc | 171 (0) | 174 (0.7) | 173 (0) | 172 (0) | 174 (0.7) | ||
| Hb-201+ | Level 1 | Referencea | 79.5 (2.1) | 78.0 (0) | 79.5 (0.7) | 79.0 (0) | 80.0 (1.4) |
| 37°C/humid, closedb | 79.5 (2.1) | 80.0 (1.4) | 80.0 (1.4) | 80.0 (0) | 80.2 (1.6) | ||
| Level 2 | Referencea | 116 (0.7) | 116 (0) | 116 (0.7) | 116 (1.4) | 120 (0) | |
| 37°C/humid, closedb | 116 (0.7) | 117 (0) | 118 (0) | 118 (0.7) | 120 (3.5) | ||
| Level 3 | Referencea | 158 (0.7) | 157 (0.7) | 158 (0) | 158 (0.7) | 160 (2.1) | |
| 37°C/humid, closedb | 158 (0.7) | 157 (0) | 159 (0.7) | 159 (1.4) | 159 (0) | ||
a
Cuvettes were stored in their original box at room temperature in a climate controlled laboratory
b
Cuvettes were stored in their original box in an incubator set to 37°C and 72% humidity
c
Cuvettes were stored in an open container in an incubator set to 37°C and 72% humidity