Contamination by cardboard particles as a cause of false-positive results for Aspergillus galactomannan enzyme immunoassays.

Galactomannan (GM) detection by the Platelia Aspergillus enzyme immunoassay is widely used for diagnosing invasive aspergillosis. A major problem with the detection of circulating GM is the occurrence of false-positive results due to the cross-reactivity of the test with antigens other than