Chemoresponse assays (lab test) measure the effect that chemotherapy treatment has on a patient's cancer cells in the lab. This test has shown success in a retrospective study in predicting how an individual patient's tumor will respond to a given chemotherapy and how treatment utilizing an agent that the test said that a patient's cells would be sensitive too corresponds to a longer progression free interval. This study will determine the ability of two tests used to predict the success of chemotherapy in recurrent, persistent, or refractory cancer of the ovaries, fallopian tube(s) or peritoneum by measuring how long patients live without progression.