Normal Lab Values: Men: .7-1.3, Women: .6-1.1 mg/dl. The ratio of BUN to creatinine should be between 10:1 and 20:1. This test is a blood test that looks at how much creatinine is in the bloodstream.

[7] The normal ratio of BUN to creatinine is 10:1. Serum creatinine can be deceiving if not assessed within the context of the patient. Let's look at creatinine clearance versus serum creatinine ...