@stueytheround @b4cks4w
The difference with prostate cancer is the level of “prostate specific antigen” (protein made only in the prostate) already has a validated blood test. There isn’t a breast-specific antigen, and even tests like CEA, CA-125, CA 19-9, etc are so nonspecific that they are only useful for comparing levels in a single person already known to have cancer, to monitor response to therapy.