Doctor insights on:
Why Fast Before A Bun Test
My blood test showed "slightly elevated" BUN (25mg). However, I eat a high protein diet and my Dr did not tell me to fast or avoid eating protein before the test. Are these results valid?
Blood Urea Nitrogen: It is a test which identifies the breakdown products of urea in your blood. Urea is itself a breakdown product of proteins so that the BUN is an indirect measure of protein metabolism. BUN is elevated in kidney dysfunction, fever, increased catabolism, high protein diet and intestinal bleeding. ...Read moreSee 1 more doctor answer
What can cause to have bun/creatinin ratio elevated. My test resul bun 18 norma 6-20, creatinin 0.63 norma0.57-1 and bun/creat ratio 29 norm 35-155?
BUN of 9: Your BUN of 9 is normal and it is also a reflection of your protein intake. Your serum creatinine is a much better guide to help assess your kidney function. If it is not elevated, you probably have reasonable kidney function. Serum creatinine is dependent on age, muscle mass, sex and race. ...Read moreSee 1 more doctor answer
BUN/CR: No. The test results won't be affected if you are not fasting. ...Read more
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