Contamination of Catheter-Drawn Blood Cultures

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  • Richard J. Everts
    <!--label omitted: 1-->Clinical Microbiology Laboratory,1 Duke University Medical Center, and
  • Emily N. Vinson
    <!--label omitted: 1-->Clinical Microbiology Laboratory,1 Duke University Medical Center, and
  • Paul O. Adholla
    <!--label omitted: 1-->Clinical Microbiology Laboratory,1 Duke University Medical Center, and
  • L. Barth Reller
    <!--label omitted: 1-->Clinical Microbiology Laboratory,1 Duke University Medical Center, and

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<jats:title>ABSTRACT</jats:title> <jats:p> To assess the risk of contamination, we reviewed retrospectively 1,408 matched pairs of simultaneous catheter-drawn and venipuncture blood cultures. Catheter-drawn cultures were equally likely to be truly positive (14.4 versus 13.7%) but more likely to be contaminated (3.8 versus 1.8% [ <jats:italic>P</jats:italic> = 0.001]). Direct venipuncture cultures are preferred. </jats:p>

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