Cryptococcal glucoxylomannan does not exhibit cross-reactivity in the MVista Histoplasma antigen enzyme immunoassay.

The potential for cross-reaction between Cryptococcus neoformans and Histoplasma capsulatum in antigen assays was evaluated. We tested patient samples, spleens from infected mice, and purified polysaccharides in the MVista Histoplasma antigen enzyme immunoassay and cryptococcal antigen latex agglutination system for cross-reactivity, and none was observed.