Packaging may lead to false positive results

BMJ 1996; 313 doi: https://doi.org/10.1136/bmj.313.7063.1010 (Published 19 October 1996) Cite this as: BMJ 1996;313:1010
  1. Adrian Edwards, Clinical fellow,
  2. Stephen Granier, Registrar in general practice,
  3. Judith Van Der Voort, Paediatric registrar
  1. Department of General Practice, University of Wales College of Medicine, Llanedeyrn Health Centre, Llanedeyrn, Cardiff CF3 7PN
  2. Department of Child Health, Cardiff Royal Infirmary, Cardiff CF2 1SZ

    EDITOR,—J H Beer and colleagues report false positive results for leucocyte esterase on urine analysis in patients concurrently using certain antibiotics.1 We have encountered false positive results for leucocyte esterase and nitrite on urine analysis.

    With Boehringer Mannheim, we are developing a kit for parents to use to test their child's urine for infection after they present their sick infant to primary care. By overcoming some difficulties encountered in primary care (for example, time constraints, availability of equipment) …

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