Two enzyme immunoassays (ELISA) for mumps antibody detection using the Enzygnost (Germany) and Parotit-screen (Russia) were comparatively assayed using sera of randomly assigned 70 healthy young adult volunteers. The neutralization test (NT) was performed for all sera using mumps viruses (MVs) of the relevant strains Enders and Leningrad-3. The proportion of positive results was significantly higher with the Parotit-screen than with the Enzygnost (80% versus 52.9%, p < 0.05). The proportion of the concordant results in both ELISAs was as 72.9% (50% for positive results and 22.9% for negative results). There was significantly better agreement between the NT with MV strain Enders and Enzygnost (98.6%, r = 0.9, p < 0.05) than between the NT with MV strain Leningrad-3 and Parotit-screen (77.1%, r = 0.6, p < 0.05). It was concluded that the Enzygnost was apparently more specific than the Parotit-screen.