Table 1. Descriptive Statistics for the 151 samples run on 3 separate occasions by each laboratory.
| Allergen | Statistic | Run | Lab A |
Lab B |
Lab C |
Lab D |
Lab E |
Lab F |
Lab G |
Lab H |
Lab I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Bla g 2 (ng/ml) |
Mean* | 1 | 7.3 | 11.5 | 10.1 | 15.4 | 12.4 | 10.0 | 21.8 | 10.9 | 9.9 |
| 2 | 7.2 | 13.8 | 11.1 | 14.0 | 13.4 | 11.5 | 17.2 | 11.4 | 9.2 | ||
| 3 | 7.6 | 13.3 | 11.1 | 13.4 | 13.2 | 10.9 | 15.8 | 11.4 | 10.3 | ||
| CV%† | 6.5% | 7.8% | 7.8% | 5.1% | 4.3% | 4.7% | 9.1% | 4.1% | 7.8% | ||
|
| |||||||||||
| Can f 1 (ng/ml) |
Mean | 1 | 11.3 | 12.6 | 11.7 | 13.1 | 11.5 | 9.5 | 17.7 | 9.0 | 14.9 |
| 2 | 12.2 | 13.4 | 13.0 | 13.0 | 13.7 | 11.1 | 18.1 | 11.1 | 15.8 | ||
| 3 | 10.3 | 11.0 | 13.2 | 13.8 | 12.4 | 11.0 | 14.4 | 11.1 | 16.7 | ||
| CV% | 4.9% | 3.8% | 4.4% | 6.6% | 6.8% | 5.5% | 14.4% | 7.1% | 7.1% | ||
|
| |||||||||||
| Der f 1 (ng/ml) |
Mean | 1 | 4.7 | 5.4 | 4.9 | 5.3 | 4.4 | 4.1 | 7.2 | 5.0 | 4.9 |
| 2 | 4.8 | 6.1 | 5.2 | 5.5 | 4.6 | 4.8 | 6.6 | 5.3 | 4.8 | ||
| 3 | 4.4 | 5.9 | 5.3 | 5.6 | 4.6 | 4.7 | 6.1 | 5.2 | 5.5 | ||
| CV% | 3.9% | 5.3% | 5.5% | 8.8% | 7.2% | 6.2% | 12.5% | 11.6% | 9.3% | ||
|
| |||||||||||
| Der p 1 (ng/ml) |
Mean | 1 | 5.4 | 6.1 | 5.8 | 6.6 | 5.3 | 4.6 | 8.8 | 5.6 | 5.9 |
| 2 | 5.4 | 6.4 | 6.2 | 7.2 | 5.9 | 5.4 | 7.8 | 5.0 | 6.5 | ||
| 3 | 5.1 | 6.3 | 6.5 | 7.2 | 5.8 | 3.5 | 7.0 | 5.4 | 6.5 | ||
| CV% | 4.6% | 5.4% | 5.7% | 9.4% | 5.5% | 12.1% | 11.1% | 11.6% | 7.3% | ||
|
| |||||||||||
| Fel d 1 (ng/ml) |
Mean | 1 | 11.4 | 12.5 | 11.2 | 13.6 | 12.5 | 8.2 | 14.1 | 9.3 | 12.1 |
| 2 | 11.2 | 14.6 | 12.4 | 13.8 | 14.4 | 10.0 | 14.3 | 10.4 | 17.9 | ||
| 3 | 9.9 | 11.2 | 12.5 | 13.8 | 13.6 | 10.0 | 11.7 | 11.3 | 21.8 | ||
| CV% | 5.8% | 9.4% | 6.7% | 12.3% | 8.5% | 6.0% | 13.7% | 9.9% | 17.3% | ||
|
| |||||||||||
| Mite Gr 2 (ng/ml) |
Mean | 1 | 7.2 | 8.6 | 8.7 | 6.8 | 7.6 | 5.0 | 11.9 | 8.6 | 9.4 |
| 2 | 7.2 | 9.1 | 9.6 | 7.2 | 8.6 | 5.8 | 10.9 | 7.2 | 10.6 | ||
| 3 | 6.8 | 9.5 | 10.2 | 7.0 | 8.7 | 5.5 | 9.1 | 6.6 | 10.6 | ||
| CV% | 4.6% | 10.4% | 6.3% | 8.6% | 7.8% | 7.8% | 11.3% | 14.0% | 9.2% | ||
|
| |||||||||||
| Mus m 1 (ng/ml) |
Mean | 1 | 0.9 | 1.0 | 1.0 | 1.0 | 1.0 | 0.8 | 1.4 | 0.8 | 1.0 |
| 2 | 1.0 | 1.1 | 1.1 | 1.1 | 1.1 | 0.9 | 1.3 | 0.9 | 1.1 | ||
| 3 | 1.0 | 1.0 | 1.1 | 1.1 | 1.0 | 0.8 | 1.1 | 1.0 | 1.1 | ||
| CV% | 3.5% | 4.1% | 6.0% | 6.4% | 5.4% | 4.1% | 11.2% | 7.2% | 5.8% | ||
|
| |||||||||||
| Rat n 1 (ng/ml) |
Mean | 1 | 0.9 | 1.7 | 1.2 | 1.6 | 1.0 | 1.0 | 1.6 | 1.0 | 1.2 |
| 2 | 0.9 | 1.5 | 1.3 | 1.5 | 1.2 | 0.9 | 1.5 | 0.9 | 1.1 | ||
| 3 | 0.9 | 1.6 | 1.4 | 1.5 | 1.1 | 0.9 | 1.1 | 1.0 | 1.1 | ||
| CV%‡ | 0.3% | 7.1% | 7.9% | 3.2% | 5.0% | 3.2% | 21.6% | 4.4% | 10.1% | ||
*
Geometric Mean
†
The coefficient of variation was calculated as the mean of the standard deviation to the mean of the 151 samples.
‡
The coefficient of variation for Rat n 1 should be interpreted with caution given the low number of specimens above the level of detection.