Accuracy of various haemoglobin methods compared with the reference haemiglobincyanide (HCN) method
| Method | Mean (g/l) | Median (g/l) | SD | Range | 95% limit below reference method | 95% limit above reference method |
|---|---|---|---|---|---|---|
| One hundred different samples were used for each method. | ||||||
| HemoCue | 94 | 104 | 46 | 1.6–16.5 | 6% | 16% |
| HCN | 94 | 106 | 46 | 1.9–16.9 | ||
| Jenway colorimeter | 65 | 59 | 30 | 1.9–16.1 | 14% | 10% |
| HCN | 67 | 60 | 30 | 2.1 –16.3 | ||
| WBA colorimeter | 58 | 52 | 25 | 1.9–14.5 | 31% | 31% |
| HCN | 61 | 56 | 28 | 1.9–16.0 | ||
| Haemoglobin colour scale | 81 | 80 | 35 | 4.0–14.0 | 48% | 37% |
| HCN | 78 | 72 | 35 | 2.3–17.0 | ||
| DHT meter | 81 | 77 | 30 | 2.8–16.8 | 19% | 33% |
| HCN | 75 | 68 | 30 | 1.9–15.4 | ||
| Lovibond | 105 | 110 | 36 | 4.0–14.0 | 83% | 33% |
| HCN | 81 | 78 | 40 | 1.5–16.5 | ||