creatinine
nounUK /kriˈætɪniːn/
US /kriˈætəniːn/
A waste substance in your blood that your kidneys clean out.
The doctor tested her blood creatinine to check how well her kidneys were working.
OTHER MEANINGS
2. A chemical compound formed when creatine in muscles breaks down and is removed by the kidneys.
Creatinine levels rise when the kidneys cannot filter it out properly.
3. A laboratory measurement used to estimate kidney function.
Her creatinine was slightly high, so the doctor ordered more tests.
4. A breakdown product measured in urine to check how well the kidneys are working.
The urine creatinine test helped the team assess his kidney health.