About this test
Creatinine is a waste product made by muscles and removed by the kidneys. When the kidneys are not working well, creatinine builds up in the blood. It is one of the main tests for kidney function.
Why it is done
- To check kidney function.
- To monitor people with diabetes, high blood pressure or kidney disease.
- Before some scans or medicines that are handled by the kidneys.
Preparation
No special preparation is usually needed. Tell us if you take regular medicines or supplements.
This information is general and is not medical advice. Please speak to your doctor about your results and treatment.