More Frequent Dialysis (>3 Treatments Per Week)

Inclusion Criteria: * Stable vascular access, i.e., lack of needling difficulties and stable flow rates. Accesses will include fistulae, grafts, catheters and ports. * 18 years of age. * History of compliance with a dialysis treatment schedule, or if a new patient, express a willingness to be compliant with a treatment schedule. * Plan to continue care and follow-up at the investigational site. * Able to sign the informed consent and other relevant documents. Exclusion Criteria: * History of poor compliance with thrice (or twice) weekly dialysis schedules as manifested by more than three unexplained missed treatments in the past six (6) months. * Pregnancy. * Intravenous drug abuser. * Expects to receive a transplant or transfer to another facility within six months of entering the study.