Total Cell Volume
Total cell volume is a test to see how well your dialyzer is working. According to the National Kidney Foundation’s Kidney Disease Outcomes Quality Initiative (NKF’s KDOQI), total cell volume should always be at least 80% of what it was first.
Urea Reduction Ratio
Urea reduction test should be at least 65%, if the right amount of dialysis is delivered to the patient, A dialyzer that is not working well is one possible reason why your numbers may be too low.