A comparison of skin prick tests, intradermal skin tests, and RASTs in the diagnosis of cat allergy
Summary
This summary is machine-generated.Skin prick tests (SPTs) and RASTs are highly effective for diagnosing cat allergy. Intradermal skin tests (IDSTs) provided minimal additional diagnostic value in this study.
Area Of Science
- Allergy and Immunology
- Diagnostic Testing
- Respiratory Medicine
Background
- Skin testing and RASTs are common allergy diagnostic methods.
- Accuracy of intradermal skin tests (IDSTs) for respiratory allergy is debated.
Purpose Of The Study
- To assess the predictive value of skin prick tests (SPTs), IDSTs, and RASTs for diagnosing cat allergy.
Main Methods
- 120 patients underwent cat allergen challenge after SPTs, IDSTs (if SPT negative), and RASTs.
- Evaluated upper and lower respiratory responses, including FEV1 changes.
- Positive challenge defined by symptom scores or a 15% fall in FEV1.
Main Results
- SPTs were positive in 81/120 patients; IDSTs were positive in 26/39 patients with negative SPTs.
- RASTs were positive in 45/51 patients with positive SPTs and negative in all with negative SPTs.
- Positive challenge results were observed in 38/41 with positive SPTs, 6/26 with positive IDSTs, and 27/27 with positive RASTs.
Conclusions
- SPTs and RASTs demonstrated excellent diagnostic efficiency for cat allergy.
- IDSTs offered limited additional diagnostic benefit beyond SPTs and RASTs.
View abstract on PubMed