The nasal provocation test in the diagnosis of allergic rhinitis. II. Comparison with other diagnostic tests.
We standardized the NPT by means of AAR, and in the present study, we compared this technique with skin testing and the RAST test. Using Alternaria tenuis and cat epithelium, the NPT was found to be more specific than skin testing; in the case of Phleum pratensis, no differences were observed. We conclude that the NPT is an excellent diagnostic technique.