Haemodiafiltration: current status

Haemodiafiltration combines elements of diffusion and convection in a single treatment modality to provide solute removal over a wide range of molecular weights. Theoretically, it represents the best available form of renal replacement therapy but uptake of the technique has been slow. This pattern may change, given the growing acceptance of the potential benefits of the technique, the maturing technology including cost-efficient online production of substitution fluid, and the demonstration of the long-term safety of the technique. Long-term clinical outcome data are awaited.