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Doctor insights on: Elevated Bun And Creatinine

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Dr. Madhu Kandarpa
2,226 doctors shared insights

Creatinine (Definition)

Creatinine is a byproduct of creatine phosphate, which is present in muscles. Creatinine levels increase if the ...Read more


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Low creatinine and elevated bun/creatinine ratioplease interpret?

Low creatinine and elevated bun/creatinine ratioplease interpret?

Stop worrying: Low creatinine is never a health concern. Reference ranges are set so that a few percent of healthies fall outside on either end. The ratio can be up if you're a little thirsty or ate a protein-rich meal lately. ...Read more

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High bun and bun/creatinine ratio results? Dangerous?

High bun and bun/creatinine ratio results? Dangerous?

See below: An elevated BUN with normal creatinine and a ratio of [generally more than 18-20] occurs most commonly in dehydrated individuals and is not a sign of kidney damage.It may also occur in in certain other conditions like bleeding in the intestines, artificial nutrition intravenously of Amino Acids and use of steroids.Your doctor determines its significance. ...Read more

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High bun and bun/creatinine ratio results so bad kidneys?

Most of time: Generally high BUN and creatinine go hand in hand in bad kidneys(chronic kidney disease)., and bun/creat ratio is 10-15 to 1 , however if ratio >20 may indicate superimposed second cause like dehydration or bleeding in gut. ...Read more

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Low creatinine and elevated bun/creatinine ratio. Please explain?

Decrease in flow.: Bun=blood urea nitrogen, byproduct of proteins ingested, if rise to high levels due to kidney problem, can cause toxic affects on the body. Creatinine= measurement of renal function. Normal bun/cr ratio about 10. The higher that ratio, the more likely it is not intrinsic kidney disease per se, but reduction in blood flow or volume to kidney, like when on strong diuretic-prerenal-reversible. ...Read more

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

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. ...Read more

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Why is bun and creatinine elevated in pneumonia?

Renal insufficiency: The BUN and creatinine should not be elevated due to the pneumonia unless the pneumonia is non-bacterial (autoimmune), or due to group a strep pyogenes strains that induce glomerulnephritis. Generally the BUN and cr will be elevated in febrile patients with infection when they are dehydrated and corrects rapidly with fluid replacement. Also in septic shock there may be acute tubular necrosis. ...Read more

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My lab results were normal for bun and creatinine however bun/creatinine ratio was high?

Possibly Dehydration: Thank goodness, your kidney function is normal. But any increase bun/creatinine ratio, typically > 20 could mean that you are dehydrated. ...Read more

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High microalbumin and microalbumin/creatinine lab results with good b.P. And kidney function. Why high?

High microalbumin and microalbumin/creatinine lab results with good b.P. And kidney function.  Why high?

High microablumin: Your microalbumin/creatinine being high signifies that you have proteinuria. See a nephrologist to have a 24 hour urine collection for creatinine clearance and protein to see how much protein you have in your urine for 24 hours and to see what your kidney function is. Blood work will be needed as well to diagnose the cause of your proteinuria. Go to a nephrologist to answer your question. ...Read more

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5 year old with high levels of bilirubin and alkaline phosphatase, high bun/creatinine ratio and high MCV and mch. Low levels of co2 and creatine?

Not enough info: Unfortunately, other than bloodwork results, no more information is provided. That's not enough to tell what's going on. Either try to provide more info or better off consult with a physician locally. ...Read more

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What means bun/creatinine ratio and elevated alt?

What means bun/creatinine ratio and elevated alt?

Renal and liver test: Alt-liver enzyme-c priors. Bun=blood urea nitrogen, byproduct of proteins ingested, if rise to high levels due to kidney problem, can cause toxic affects on the body. Creatinine= measurement of renal function. Normal bun/cr ratio about 10. The higher that ratio, the more likely it is not kidney disease per se, but reduction in blood flow or volume to kidney, like when on strong diuretic-prerenal. ...Read more

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What results in an elevated bun level with a normal serum creatinine?

What results in an elevated bun level with a normal serum creatinine?

See below: An elevated BUN with normal creatinine occurs most commonly in dehydrated individuals and is not a sign of kidney damage.It may also occur in in certain other conditions like bleeding in the intestines, artificial nutrition intravenously of Amino Acids and use of steroids. ...Read more

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Elevated alt/ast/ldh and bilirubin?

Elevated alt/ast/ldh and bilirubin?

Liver dysfunction : This indicates abnormality in liver function. Talk to your physician. ...Read more

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Elevated creatinine serum what is critical?

Elevated creatinine serum what is critical?

Diagnosis needed: Serum creatinine is affected by protein intake, gender, age, race, muscular build, and renal function. A rising creatinine is always of concern. "normal" on lab tests is generally less than 1.2 mg/dl. Renal function can be estimated with a more complex formula or measured with a 24 h urine collection. See your internist for further evaluation. ...Read more

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What causes marked bun elevation with normal creatinine?

Co-tango usually: The BUN is usually 10 times the creatinine. When the creatinine goes up, the BUN goes up similarly to roughly keep this proportion, in most kidney disease states. The notable exception is when the creatinine goes up say by 20% to 1.2, but the BUN goes up *5 to 50. This strongly suggests a pre-renal state, commonly dehydration. Mild elevations of BUN with normal creatinines aren't of concern. ...Read more

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At what serum creatinine and blood urea level dialysis should start?

At what serum creatinine and blood urea level dialysis should start?

Onset of dialysis: There are no set levels for BUN and creatinine (c) to start dialysis. The onset of dialysis is determined by a 24 hour urine collection for c clearance. If the patient is a diabetic, dialysis usually starts at a c clearance of 15 ml/min or less. If the patient is a non-diabetic, dialysis starts at a c clearance of. ...Read more

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High bun and bun/creatinine ratio results. What does this mean?

Dehydration: Is most common cause of high BUN with normal creatinine (therefore high ratio). Other causes can be high protein load in the diet, muscle injury or muscle breakdown (bun is formed by the breakdown of proteins). Whether to worry depends on how high the BUN is, and the circumstances when the test was drawn. Talk to the doctor who ordered the test for personalized interpretation. ...Read more

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Which etiology results in an elevated bun level with a normal serum creatinine level?

Which etiology results in an elevated bun level with a normal serum creatinine level?

Multiple causes: BUN is a breakdown of ingested protein, but becomes elevated compared to creatine, in cases of increased catabolism (breakdown). Such things as a high protein diet, use of some steroids, some infections, or volume depletion may commonly raise BUN levels. In a hospital setting, tube feeding, tpn, GI bleeding, infections, decreased flow to the kidneys, and use of steroids are frequent contributors. ...Read more