Accuracy of a point-of-care testing device in children with suspected respiratory allergy

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Abstract:

Measuring IgE antibodies is useful in the diagnostic workup of allergy and asthma. This study was designed to assess the value of a new point-of-care test (ImmunoCAP Rapid Wheeze-Rhinitis Child [ICR]; Phadia AB, Uppsala, Sweden) in the diagnosis of atopy in children with allergy-like symptoms such as rhinitis, eczema, and recurrent episodes of wheezing. Patients (n = 175; average age, 7.2 years) referred from primary care were consecutively enrolled in two pediatric allergy referral centers in Italy and were assessed during a single visit. The ICR test included egg, milk, house-dust mite, timothy, mugwort, wall pellitory, birch, olive, cat, and dog allergens. ICR results were consistent with 78% of the positive clinical diagnoses. Agreement between negative ICR results and physician's clinical judgment ranged between 92 and 99% for the single allergens and averaged 96% for the complete profile. Overall agreement of ICR versus clinical diagnosis was 93%. A false positive ICR rate of 1% was recorded. ICR was positive for 94% of the patients with at least one positive clinical diagnosis. Based on the agreement between the physician's assessment of the clinical relevance of each allergen and the ICR results, we concluded that ICR could be a useful tool for primary care physicians to rule in or out the clinical relevance of single ICR allergens.

Keywords: Allergic rhinitis; IgE; ImmunoCAP; allergy; asthma; diagnosis; pediatrics; point-of-care testing; primary care

Document Type: Research Article

DOI: http://dx.doi.org/10.2500/aap.2010.31.3323

Affiliations: Melloni Paediatria, University of Milan Medical School at the Melloni Hospital, Milan, Italy

Publication date: March 1, 2010

More about this publication?
  • Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.

    The goal of the Proceedings is to publish articles with a predominantly clinical focus which directly impact quality of care for patients with allergic disease and asthma.

    Featured topics include asthma, rhinitis, sinusitis, food allergies, allergic skin diseases, diagnostic techniques, allergens, and treatment modalities. Published material includes peer-reviewed original research, clinical trials and review articles.

    Articles marked "F" offer free full text for personal noncommercial use only.

    The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
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