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A 40-year-old member asked:

What does it mean if both bun & creatinine levels are good, but the ratio is high?

2 doctor answers4 doctors weighed in
Dr. Gurmukh Singh
Pathology 49 years experience
Actual values: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, if both creatinine and BUN are normal you do not need to worry about the ratio.
Dr. Gurmukh Singh
Pathology 49 years experience
Need numbers: It would help to have the actual numbers. The doctor who ordered these tests would be in a better position to advise as s/he knows your health status.

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A 40-year-old female asked about a 65-year-old female:

What does it mean low creatinine levels and high bun creatinine ratio?

1 doctor answer1 doctor weighed in
Dr. Gurmukh Singh
Pathology 49 years experience
Muscle mass: Serum levels of creatinine depend on renal function, muscle mass and intake of muscles foods. A low creatinine level is of no consequence as long as you are not emaciated. Paralyzed, or have extensive amputations. High ratio just reflects low creatinine.
Dr. Gurmukh Singh
Pathology 49 years experience
Provided original answer
Wish you good health!
May 11, 2018
CA
A 29-year-old female asked:

What does it mean if your creatinine level is too high 1.16 and your bun/creatinine ratio is very low at a 5?

3 doctor answers5 doctors weighed in
Dr. Ed Friedlander
Pathology 44 years experience
Why do you ask?: Labs mean nothing in the absence of a clinical history. You might be a vegan bodybuilder. When I was lifting weights every day, my creatinine ran 1.6-1.8. The fellow-pathologists with whom I've discussed it think that reports generated by labs are causing overdiagnosis of renal disease (it's subscience -- "there's an adjustment for race because black people are more muscular.")

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Last updated Sep 26, 2019

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