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Generally speaking, normal creatinine level ranges from 0.5 to 1.1 mg/dl for female and 0.6 to 1.2 mg/dl for male. It is possible that the normal creatinine level for people with only one kidney is a little higher.
Photo Credit MIXA next/MIXA/Getty Images. GFR, or the glomerular filtration rate, is a blood test that measures how well your kidneys remove waste products from your body. A GFR level below 60 is indicative of kidney disease, while a value of 15 or less signifies kidney failure.hoto Credit MIXA next/MIXA/Getty Images. GFR, or the glomerular filtration rate, is a blood test that measures how well your kidneys remove waste products from your body. A GFR level below 60 is indicative of kidney disease, while a value of 15 or less signifies kidney failure.