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Am J Vet Res. 1994 Aug;55(8):1111-4.

Comparison of microscopic and flow cytometric detection of platelet antibody in dogs suspected of having immune-mediated thrombocytopenia.

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  • 1Department of Small Animal Clinical Sciences, University of Minnesota, St Paul 55108.

Abstract

A flow cytometric platelet immunofluorescence assay (FC-PIFA) was compared with a previously developed microscopic platelet immunofluorescence assay (MI-PIFA) for detection of circulating platelet antibody. Both assays were performed on serum from 10 healthy dogs with normal platelet count, and on serum from 27 thrombocytopenic dogs--18 had primary immune-mediated thrombocytopenia (IMT), and 9 had IMT in addition to other immune-mediated disease (secondary IMT). Both assays yielded negative results for all control dogs. The MI-PIFA and FC-PIFA results were in agreement in 23 dogs with IMT (14 positive and 9 negative). There was linear correlation between MI-PIFA scores and FC-PIFA results (r = 0.873). Positive results were obtained for 55.5% of the dogs with suspected IMT, using the MI-PIFA, compared with 67%, using the FC-PIFA; however, the difference was not statistically significant. Use of fresh or frozen fixed donor platelets as the antigen source yielded similar results in the FC-PIFA.

PMID:
7978651
[PubMed - indexed for MEDLINE]
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