In March, Dr. John Bennet of NIAID, Bethesda sent a query to EIN re: reports of negative EIA tests for cryptococcal antigen from serum and CSF of known cryptococcosis patients. Latex agglutination tests on the same specimens gave positive results with titers up to 1:1024. Positive controls in the EIA test kits were checked and found to be functional. Has anyone else had a similar experience?