CD40LG and Candidiasis, Invasive: Several species-specific and non-specific serological assays are commercially available for the diagnosis of invasive candidiasis: C. (Candida) albicans germ tube antibody (CAGTA) assay [renamed as Invasive Candidiasis (CAGTA) IFA]; C. albicans IgM (immunoglobulin M); C. albicans IgG; and Candida mannan ELISA (enzyme-linked immunosorbent assay).