False-Positive Results of Aspergillus Enzyme-Linked Immunosorbent Assays for a Patient with Gastrointestinal Graft-versus-Host Disease Taking a Nutrient Containing Soybean Protein

Abstract excerpt

SIR—A direct double antibody sandwich ELISA (Platelia Aspergillus; BioRad) for galactomannan antigen has a sensitivity of 67%–100% and a specificity of 81%–99% for the diagnosis of invasive aspergillosis (IA) [1]. The mechanism of reported false-positive results remains to be clarified [2, 3]. We describe a patient who had consecutive positive galactomannan ELISA results without any signs of IA. A 31-year-old...

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