Agents used in active challenge tests
| Agent | Challenges n |
| Aspergillus fumigatus | 19 |
| Acremonium kiliense | 3 |
| Isocyanates | 8 |
| Acid anhydrides | 3 |
| Wheat flour | 3 |
| Two-component paints | 2 |
| Enzymes | 2 |
| Acrylates | 1 |
| Chloramin-T | 1 |
| Colophony | 1 |
| Cow epithelium | 1 |
| Decorative plants | 1 |
| Epoxy resin | 1 |
| Latex | 1 |
| Persulphates | 1 |
| Stainless steel welding | 1 |
| Wood dust | 1 |
| Total | 50 |