Dehydration results in blood urea nitrogen levels to increase more than the creatinine levels. What if BUN is normal but creatinine is high?īUN cannot be normal if creatinine is high. The points of difference between BUN and Creatinine have been summarized as below:įAQ Which is more accurate BUN or creatinine?Ĭreatinine is a more reliable indicator of kidney performance and function in comparison to Blood urea nitrogen because it is less influenced by other factors like hydration and diet. Testing methodsīlood urea nitrogen is measured mostly enzymatically – glutamate dehydrogenase (GLDH) methodĬreatinine is measures either chemically or enzymaticallyĮnzymatically – spectrophotometer method Summary Normal values by age are – 0.9 to 1.3 milligram/dL for adult males. 0.6 to 1.1 milligram/dL for adult females. 0.5 to 1.0 milligram/dL for children aged three to eighteen years. What is normal?īlood urea nitrogen is normal if it is between 7 and 20. The creatinine test helps to measure the kidney performance and function. It is a waste product usually eliminated from the body by the kidneys. Difference between Blood Urea Nitrogen (BUN) and Creatinine? Definitionīlood urea nitrogen (BUN) is a kidney test that assesses the urea nitrogen levels present in the blood Normal for one person may not be normal for another. However, the “normal” creatinine level is associated with many other factors like age, gender, size of the body and race. Creatinine levels greater than 1.2 for females and greaten than 1.4 for males may be an early warning that the kidneys are not working well and are damaged. Hence, investigating the creatinine levels in the blood is used to assess the kidney function. When the kidneys do not function as efficiently as they should, then the creatinine levels can increase in the blood. Kidneys that function properly are able to filter out waste item like creatinine and leave the body in your urine. Creatinine is a breakdown product that is formed due to the normal damage that naturally and inevitably occurs on muscles in your body. A serum creatinine test (sCr) investigates the creatinine level in your blood.

Normal bun and creatinine range