Abstract
Objective To find out the cut-off value of rose bengal plate agglutination test(RBPT) in rapid diagnosis of brucellosis.Methods From May to June 2009,398 people who came to the outpatient department of Inner Mongolia Center for Endemic Disease Control and Research were diagnosed brucellosis by RBPT and tube agglutination test (SAT).Tube agglutination test as a gold standard,rose bengal plate agglutination test,its authenticity and reliability were evaluated.Results Taking positive predictive value 100.0％ as the selection standard,the cut-off value of RBPT was ++ which could be used to diagnose brucellosis.The sensitivity was 83.3％; the specificity was 100.0％; the Youden index was 0.832; and the compliance rote was 89.9％.Conclusion The cut-off value ++ of RBPT to diagnosis brucellosis is worthy of clinical promotion. Key words: Brucellosis; Rose bengal plate agglutination test; Tube agglutination test; Diagnosis; Cut-off value
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