Reduction in false-positive Aspergillus serum galactomannan enzyme immunoassay results associated with use of piperacillin-tazobactam in the United States

J Clin Microbiol. 2014 Jun;52(6):2199-201. doi: 10.1128/JCM.00285-14. Epub 2014 Apr 9.

Abstract

Piperacillin-tazobactam (PTZ) is known to cause false-positive results in the Platelia Aspergillus enzyme-linked immunoassay (EIA), due to contamination with galactomannan (GM). We tested 32 lots of PTZ and 27 serum specimens from patients receiving PTZ. GM was not detected in the lots of PTZ; one serum specimen (3.7%) was positive. PTZ formulations commonly used in the United States today appear to be a rare cause for false-positive GM results.

Publication types

  • Case Reports

MeSH terms

  • Aged, 80 and over
  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / therapeutic use*
  • Aspergillosis / diagnosis*
  • Aspergillus / isolation & purification*
  • Diagnostic Tests, Routine / methods*
  • Drug Contamination
  • False Positive Reactions*
  • Female
  • Galactose / analogs & derivatives
  • Humans
  • Immunoenzyme Techniques / methods
  • Mannans / blood*
  • Penicillanic Acid / analogs & derivatives
  • Penicillanic Acid / chemistry
  • Penicillanic Acid / therapeutic use
  • Piperacillin / chemistry
  • Piperacillin / therapeutic use
  • Piperacillin, Tazobactam Drug Combination
  • Serum / chemistry*
  • United States

Substances

  • Anti-Bacterial Agents
  • Mannans
  • galactomannan
  • Piperacillin, Tazobactam Drug Combination
  • Penicillanic Acid
  • Piperacillin
  • Galactose