Falsely negative urinary leucocyte counts due to delayed examination

H. Kierkegaard, U. Feldt-Rasmussen, M. Hørder*, H. J. Andersen, P. J. Jørgensen

*Corresponding author for this work

    Research output: Contribution to journalJournal articleResearchpeer-review


    Microscopic examination for urinary leucocytes was performed in the ward immediately after micturition and approximately 3 h later at a laboratory. Of the forty-eight specimens classified as positive by counting in the ward, 35% erroneously turned up negative by later counting at the laboratory. Counting of urinary leucocytes should consequently be performed as soon as possible after micturition, probably within 1 h.

    Original languageEnglish
    JournalScandinavian Journal of Clinical and Laboratory Investigation
    Issue number3
    Pages (from-to)259-261
    Publication statusPublished - 1. Jan 1980


    • Children
    • Microscopic examination
    • Transportation
    • Urinary tract infection


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