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Normal levels of creatinine in the blood are approximately 0.6 to 1.2 milligrams (mg) per deciliter (dL) in adult males and 0.5 to 1.1 milligrams per deciliter in adult females.reatinine levels that reach 2.0 or more in babies and 10.0 or more in adults may indicate severe kidney impairment and the need for a dialysis machine to remove wastes from the blood.
The normal level of creatinine in the blood plasma or serum is 1 - 2mg/dl and its normal daily excretion ranges from 1 to 2 grams. The serum creatinine values of up to and even exceeding occasionally 20mg/dl have been seen in the later stages of renal failure.The major cause of increased levels of serum creatinine and blood urea is the poor clearance of these substances by the kidneys rather than excessive production.In acute glomerulonephritis values from normal to over 300mg/dl are generally observed.he serum uric acid could be found markedly increased from the normal level of 2 -6mg/dl to 10 - 30mg/dl with minimal impairment of renal function. The creatinine level in blood starts rising after 2 to 4 fold rise in the blood urea level.