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Annals of Clinical & Laboratory Science 35:318-322 (2005)
© 2005 Association of Clinical Scientists

Comparison of VIDAS Stallertest and Pharmacia CAP Assays for Detection of Specific IgE Antibodies in Allergic Children

Myung Hyun Sohn1,*, Soo-Young Lee2,*, Kyung Eun Lee1 and Kyu-Earn Kim1
1 Department of Pediatrics and Institute of Allergy, Brain Korea 21 Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Korea; 2 Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea

Address correspondence to Kyu-Earn Kim, M.D., Ph.D., Department of Pediatrics, Yonsei University College of Medicine, Youngdong Severance Hospital, P.O. Box 1217, Seoul 135-270, Korea; tel 82 2 3497 3353; fax 82 2 3461 9473; e-mail kekim{at}yumc.yonsei.ac.kr.

In vitro determination of specific IgE antibodies in serum is the most frequently used method, besides the skin test, for diagnosing allergies. Standardized and reproducible assays of specific IgE antibodies contribute to the quality of diagnosis and treatment of allergic disease. This study compared the results and performance characteristics of the Pharmacia CAP system and a new specific IgE method using the VIDAS Stallertest (manufactured by bioMériux). To evaluate their clinical efficiency, the results of the CAP and VIDAS Stallertest assays were compared with skin prick test (SPT) results. After allergic patients completed SPTs, serum samples were collected and CAP and VIDAS Stallertest assays were performed to determine specific IgEs for Dermatophagoides farinae, D. pteronyssinus, cockroach, and alternaria. For egg and milk, we measured only the correlation between the 2 in vitro assays. When SPT was used as a reference standard, the sensitivity and specificity of the CAP assay was a little higher in respect to all inhalant allergens. There were significant correlations between the results of VIDAS Stallertest and CAP assays for IgE antibodies to inhalant and food allergens. This study indicates that the VIDAS Stallertest and Pharmacia CAP assays are feasible and replicable for measuring allergen-specific IgE.

Keywords: VIDAS Stallertest assay, Pharmacia CAP assay, specific IgE, inhalant allergens, food allergens






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