The leukergy test in rheumatic diseases. New implications for an old test

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Abstract
In order to assess the value of the leukergy test in which leukocytes aggregate in citrated whole blood, we examined 65 patients with various rheumatic conditions. In addition, plasma samples from 40 patients were examined for neutrophil aggregation activity in vitro. Results of the leukergy test were found to be in very good correlation with disease activity (P = 0.0001), whereas no increased neutrophil aggregation activity was found in the 40 plasma samples examined. The value of the leukergy test in assessing patients with rheumatic disease and its theoretical etiopathogenic role in these diseases are discussed.