Study Design This is a multi-center study including low and high prevalence ovarian cancer sites. The sites are representative of all institutions where potential ovarian tumor subjects will undergo a gynecological examination with radiological exam prior to surgical intervention. A blood specimen will be taken once only from enrolled subjects. This blood specimen will be used in the evaluation of the OvaRl test to identify subjects with ovarian cancer from within a population of women with a documented ovarian mass and planned surgical intervention.