This study will sample urine provided by bladder cancer patients as part of their normal routine surveillance screening. No additional effort will be required from the patients and only modest additional effort from the study staff. Some de-identified patient medical information may also be requested, including concominant medications, relevant current or previous diseases, prior bladder cancer interventions and other relevant information to ensure there are no interfering substances or other confounders that could affect study results. There is no risk to patients as the normal diagnostics for bladder cancer will be followed.
