creatinine reference range
The reference range for creatinine is 50 to 110 Î¼mol/L (0.8 - 1.4 mg/dl). Men tend to have higher levels of creatinine because they have more skeletal muscle than women. Serum creatinine is not affected by diet or activity level.reatinine. Creatinine is a breakdown product of creatine phosphate in muscle, and is usually produced at a fairly constant rate by the body (depending on muscle mass). It is filtered by the kidney. If the filtering of the kidney is deficient, blood levels rise. This effect is used as an indicator of renal function.