16
May
Lab Values For Bun And Creatinine. But when the kidneys are not functioning properly this waste product stocks up in your blood leading to an increase in bun levels. Bun is not typically elevated and bun scr tends to be less than 20 1 in patients with lower gi bleeds. Your kidneys remove urea nitrogen from your blood. Your protein intake can also shoot up or lower your bun.
A normal bun value should be within 7 to 20 mg dl. To get the bun creatinine ratio the bun count is divided by the creatinine count. But when the kidneys are not functioning properly this waste product stocks up in your blood leading to an increase in bun levels. Outside the united states particularly in canada and europe the term urea is often used. The ideal ratio of bun to creatinine falls between 10 to 1 and 20 to 1. What is the normal bun creatinine ratio.
From wikipedia the free encyclopedia in medicine the bun to creatinine ratio is the ratio of two serum laboratory values the blood urea nitrogen bun mg dl and serum creatinine cr mg dl.
Creatinine 0 7 to 1 2 mg. This is evident in a metabolic panel. But normal ranges may vary depending on the reference range used by the lab and your age. The ideal ratio is between 10 1 and 20 1. Postrenal azotemia is due to obstruction. A normal bun value should be within 7 to 20 mg dl.