Inclusion Criteria:  High and intermediate risk surveillance subjects with a previous confirmed diagnosis or recurrence of urothelial carcinoma Subjects must agree to 4 successive visits including urine sample collection at each of the study visits and records review follow-up Able to provide a voided urine sample (a sample from catherierization is not eligible) of the required minimum volume Able to give written consent Able and willing to comply with study requirements Aged 18 years or older  Exclusion Criteria:  Prior genitourinary manipulation (flexible or rigid cystoscopy / catheterisation, urethral dilation) in the 14 days before urine collection Total cystectomy of the bladder, subjects with neo-bladders or illeal conduits Previous muscle invasive bladder tumour (pT2 or greater) Pregnancy