Does blood coming from an ovarian cyst outside of the regular menstrual period count as menstrual blood that prevents prayer?

If a woman sees blood during a period when it can be considered menses, then it is menses, because the default assumption for a woman's blood is that it is menstrual blood. We have clarified the timeframe during which blood is considered menses in fatwas no. 84425 and 96371. We have also explained the ruling on menstrual blood mixing with other types of blood in fatwa no. 103892.