| Marker | What it adds |
|---|---|
| Creatinine | A blood measurement used to estimate kidney filtration. |
| eGFR | An estimate of filtering ability, usually calculated from blood creatinine and other information. |
| Urine albumin / creatinine ratio (uACR) | Compares albumin with creatinine in urine to assess albumin leakage. |
Two tests, two questions
eGFR asks how well the kidneys filter. Urine albumin-to-creatinine ratio asks whether albumin is leaking into urine. One result does not replace the other. [1]
A blood measurement used to estimate kidney filtration.
An estimate of filtering ability, usually calculated from blood creatinine and other information.
Compares albumin with creatinine in urine to assess albumin leakage.
Why a reassuring eGFR is not the whole answer
If eGFR looks reassuring but urine albumin is raised, the urine finding still needs interpretation. A repeat urine sample may help confirm whether the finding persists. [1]
Bring earlier results
Chronic kidney disease requires evidence of a kidney abnormality lasting at least three months; one unexpected result does not establish that duration. Bring earlier reports so your clinician can assess persistence. A sudden change can still need prompt assessment rather than waiting three months to seek care. [1] [2] [3]
How do my filtering estimate and urine albumin fit together over time?
Sources & references
- NIDDK: Chronic Kidney Disease Tests & Diagnosis ↗
- National Kidney Foundation: Chronic Kidney Disease (CKD) ↗
- National Kidney Foundation: Acute Kidney Injury (AKI) ↗
Practical-section sources accessed: .
For general health education. Interpreting your result and deciding on tests or treatment requires your health context and a qualified clinician.