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  • Title: [Does clinical stage have any influence on the results of provocation tests in allergic children? I. The best clinical stage for food provocation tests].
    Author: Koshibu T, Tsubaki T, Iwasaki I, Akasawa A, Saito H, Iikura Y, Koya N, Kishida M, Aoki T.
    Journal: Arerugi; 1994 Jan; 43(1):22-7. PubMed ID: 8147705.
    Abstract:
    To investigate the best clinical stage for food provocation tests, twenty allergic patients who had early allergic reactions induced by any kind of food were tested. The patients were classified into two groups. Group I; open-food challenge tests were performed on eleven patients within 48 hours of admission. Group II; the tests were performed on nine patients seven or more days after admission. In these food provocation tests, there were nine positive results in Group II (p < 0.05). The percentage of eosinophils in the blood was higher in cases of positive provocation than in cases of negative provocation (p < 0.05). Moreover the percentage of eosinophils decreased after admission day by day in the provocation-negative patients of Group II, but there was no change in the provocation-positive patients. These results suggest that individual sensitivity to food decreased after admission. Therefore, in order to assess the actual sensitivity of allergic children it is necessary that food provocation tests be performed within two days of admission or before admission.
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