Evaluation of a solid-phase cellular enzyme immunoassay for detection of the serologically defined male antigen

An indirect cellular enzyme immunoassay for the detection of the serologically defined male-specific antigen, SDMA, was developed using mouse spermatozoa as the target. Serum from B6 female mice injected with male spleen cells was used as the source of SDMA-specific antibody. Our results indicate that the assay is highly reliable (96% accurate) with an intra- and interassay coefficient of variation less than 12%. Since this assay is non-subjective and simple to perform it provides a useful alternative to the complement-dependent cytotoxicity assay for detection of SDMA.