Your test results can be used to determine how damaged your kidneys are, known as the stage of CKD.
This can help your doctor decide the best treatment for you and determine how often you should have tests to monitor your condition.
Your eGFR result is given as a stage from one to five:
- stage 1 (G1) – a normal eGFR (above 90ml/min), but other tests have detected signs of kidney damage
- stage 2 (G2) – a slightly reduced eGFR (60-89ml/min), with other signs of kidney damage
- stage 3a (G3a) – an eGFR of 45-59ml/min
- stage 3b (G3b) – an eGFR of 30-44ml/min
- stage 4 (G4) – an eGFR of 15-29ml/min
- stage 5 (G5) – an eGFR below 15ml/min, meaning the kidneys have lost almost all of their function
Your ACR result is given as a stage from one to three:
- A1 – an ACR of less than 3mg/mmol
- A2 – an ACR of 3-30mg/mmol
- A3 – an ACR of more than 30mg/mmol
For both eGFR and ACR, a higher stage indicates more severe kidney disease.