Creatinine is the best routine blood test for measuring how well kidneys are working. It is a waste product produced by muscles and put out through the kidneys. This means that 'normal' levels depend on how much muscle you have, and this can cause some problems in spotting kidney disease. If your kidneys aren't functioning properly, an increased level of creatinine may accumulate in your blood.
What The Normal Range of Creatinine Level?
Normal values can vary from laboratory to laboratory, but are generally in the following ranges:
●Adult female: 0.5–1.1 mg/dL
●Adult male: 0.6–1.2 mg/dL
●Adolescent: 0.5–1.0 mg/dL
●Child: 0.3–0.7 mg/dL
●Infant: 0.2–0.4 mg/dL
●Newborn: 0.3–1.2 mg/dL
Abnormal results
2 to 4 mg/dL indicate the presence of impairment of renal function. Greater than 4 mg/dL indicates serious impairment in renal function.
Who Needs to Take It?
- If you have type 1 or type 2 diabetes, your doctor may recommend a creatinine test at least once a year.
- If you have kidney disease, your doctor may recommend creatinine tests at regular intervals to monitor your condition.
- If you have an illness that may affect your kidneys — such as high blood pressure or diabetes — or you're taking medication that may affect your kidneys, your doctor may recommend creatinine tests.
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