Creatinine is a waste product formed by the breakdown of a substance (creatine) important for converting food into energy (metabolism). The creatinine is filtered out of the blood by the kidneys and then passed out of the body in urine.
If the kidneys are damaged and can't function normally, the amount of creatinine in the urine decreases while the amount of creatinine in the blood increases.
eMedicineHealth Medical Reference from Healthwise
To learn more visit Healthwise.org
- Early Care for Your Premature Baby
- What to Eat When You Have Cancer
- When to Take More Pain Medication