Rapid identification of Candida albicans by dot-enzyme immunoassay

A highly sensitive and specific dot-enzyme immunoassay for the rapid identification of Candida albicans was developed using a murine monoclonal antibody (Mab), which adsorbed to cell surface-exposed determinants. This Mab reacted with 28 of the 28 C. albicans strains tested including the serotypes A and B and 2 C. stellatoidea. It did not react with 32 other isolates representing eight other Candida species commonly encountered in human materials. All the test could be performed in four steps in less than an hour. The yeasts were directly spotted on a strip of immunodyne membrane. Then the strip was incubated for 5 min. with the Mab, for 15 min. with a peroxidase-conjugate and for 30 min. with the enzyme substrate and 4-chloro 1 naphthol. This test proved useful for rapid and easy identification of C. albicans.