by Jade Teta on February 13, 2015. BUN, or Blood Urea Nitrogen, is a test performed on the standard chemistry panel your doctor performs. He or she uses it to rule out kidney disease, but it can be abnormal for other reasons.
1. Women usually have lower results on the serum creatinine test because they have a lower muscle mass in their bodies. The average range for women is between 0.6 and 1.1 mg/dL and for men it increases to between 0.7 and 1.3 mg/dL. As with the urine creatinine test, the average results can vary depending on the lab and their specific tests and procedures.
Although the level of creatinine in the blood is a useful guide to kidney function, the eGFR is a more accurate measure. Blood creatinine can be used to estimate the eGFR using age, sex and race. This is often calculated by computer and reported with the creatinine blood test. The normal value for eGFR is 90-120 ml/min.