Is there an in vitro test for type IV allergy discriminating between sensitization and allergic disease?

@article{TraidlHoffmann2008IsTA,
  title={Is there an in vitro test for type IV allergy discriminating between sensitization and allergic disease?},
  author={Claudia Traidl-Hoffmann and Johannes Hofaker Ring},
  journal={Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology},
  year={2008},
  volume={38 9},
  pages={1412-5}
}