ROUTINE outpatient appointments:
1. Stable CKD stage 4 (eGFR<30 mls/min) 2. CKD stage 3 (eGFR<60 mls/min) according to GP guidelines 3. Diabetics with proteinuria >1g/24 hours or CKD stage 3 4. Isolated Proteinuria (>1g/24hours) 5. Any proteinuria with haematuria 6. Inherited or structural renal disorder (eg PKD, pyelonephritis) 7. Metabolic investigation of recurrent renal stone formation 8. Electrolyte abnormalities - High or low potassium - High or low calcium - Low sodium - Acidosis