The test detects antigen of both C. neoformans and C. gattii.
Presence of cryptococcal polysaccharide is indicative of cryptococcosis. Trichosporon beigelii infection may cause a false positive reaction.
NOTE: Titers performed on all positive specimens. Titers may not be available until 24 hours after initial test on first positives. The first positive specimen per patient will be called to a health care provider.
Back up cultures on first positive CSF specimens will automatically have a culture performed if not already ordered due to the importance of recovering the causative organism for identification.
Because of the half-life of the cryptococcal antigen, retesting of positive patients should be done no more frequently than every 5 days.