| Guidelines | Predialysis bicarbonate level (mmol/L) |
| 2000, 2003 National Kidney Foundation-Kidney Disease Outcomes Quality Initiative (NFK-KDOQI) [62] [63] | ≥22 |
| Dialysis Outcomes and Practice Patterns Study (DOPPS) [15] | 19 - 22 |
| 2007 European Best Practice Guidelines (EBPG) [64] | 20 - 22 |
| 2007 Caring for Australasians With Renal Impairment (CARI) [65] | ≥22 |