| Indication for challenge | Reaction to challenge | |
| Positive N (%) | Negative N (%) | |
| To confirm culprit | 20 (29.4) | 48 (70.6) |
| Confirm/exclude cross reactivity | 16 (53.3) | 14 (46.7) |
| Suitable alternative | 5 (8.8) | 52 (91.2) |