Normal Blood Creatinine Level

Creatinine is an important indicator of your renal function. In general, we may meet its common two concepts like “serum creatinine” and “urine creatinine”. Here are the reference ranges of them.

Serum Creatinine

  • Adult males: 0.5–1.2 mg/dL*
  • Adult females: 0.4 – 1.1 mg/dL*
  • Children (up to 12 years of age): 0.0–0.7 mg/dL

The reference interval varies with race, ethnicity, and gender.

There is another indicator, the calculated eGFR (estimated glomerular filtration rate), for serum creatinine measuring and renal function assessing. 

Table 1. Glomerular Filtration Rate 

Age (Years)

Mean GFR

(mL/min/1.73 m2)

20-29 116
30-39 107
40-49 99
50-59 93
60-69 85
70+ 75


Urine creatinine  

  • Adult males: 20-25 mg/kg/day (roughly 1575 mg/day for a 70-kg male)
  • Adult females: 15-20 mg/kg/day (roughly 1050 mg/day for a 60-kg female)

Note: Water intake can affect the urine creatinine concentrations (mg/dL), making the result not very meaningful. These two references are able to help you read your creatinine level test report. But we better listen to the doctor’s detailed analysis.


* The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.