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Doctor insights on: Elevated Bun Normal Creatinine

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Dr. Madhu Kandarpa
2,215 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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What means an elevated BUN to creatinine ratio of 24 if both BUN and Creatinine are individually normal? BUN: 17.7, Creat: 0, 75. Take many fluids. Txs

What means an elevated BUN to creatinine ratio of 24 if both BUN and Creatinine are individually normal? BUN: 17.7, Creat: 0, 75. Take many fluids. Txs

Elevated ratio: Hi Oskcar. You lab levels are normal and your ratio is high due to your low creatinine level. If you had a high BUN-creatinine ratio that was abnormal due to dehydration, your serum sodium and chloride would be high. You did not mention those values in your test results. Were they elevated? If not, you need not worry, if they were, ingest more fluids to reduce them and lower your ratio. Read more

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Hi my 4y son has BUN 12, Creatinine 0.26 which is normal however his BUN/Creatinine Ratio is 46. Why would it be elevated?

Has no importance: The value of this ratio does not become important when the creatinine level is so low (but normal) in early childhood. It is only when the body mass has matured and the creatinine level rises that it can have any significance. Please do not freak over pre-printed lab reports generated by a computer. It is truly not an issue. Read more

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Healthy 35 yr old female w B/C ratio elevated at 23 with normal Bun and creatinine level of 16 (ref range 7-18) and 0.7. I did not drink much that day?

Healthy 35 yr old female w B/C ratio elevated at 23 with normal Bun and creatinine level of 16 (ref range 7-18) and 0.7. I did not drink much that day?

Tests, tests, tests: Tests results always have to be interpreted in a context. When they measure the temperature of the winner of the Boston Marathon 2 yrs ago it was over106 F. Was he very ill? NO! He had been using his bodies muscles at full output for over 2 hrs straight. The heat generated raised his body temp a lot and he soon cooled off. You hv to talk with yr doc or make a virtual consult. 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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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

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elevated BUN, elevated k+, elevated chloride, normal creatinine, and decreased Co2. Could this indicate kidney failure?

elevated BUN, elevated k+, elevated chloride, normal creatinine, and decreased Co2. Could this indicate kidney failure?

Probably not: I need more information in order to optimally answer your question. However, at a glance, the best indicator of kidney function is creatinine clearance. BUN can be elevated from other processes. I would need to look at the lab report to confirm your impressions. You are too young to have CKD. You should review the labs with the doctor who ordered them. 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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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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Hi Dr. If normal range for BUN/Creatinine is 8-20 should I be alarmed if mine is 23?

Bun: It is common for bun to be mildly elevated and to normalize when the test is repeated. The BUN number can be temporarily increased depending on the body current state of hydration. Try hydrating a little a few hours before your next blood test. Read more

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Which pharmacokinetic process would be affected by elevated creatinine and bun levels?

Depends on drug: Many drugs are excreted by the kidneys and doses of those drugs need to be adjusted in people with elevated BUN/Cr. Read more

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I'm 27 m, My creatinine is 0.92 six month back now its 1.02 & bun is 7.9 to 6.1 now why creatinine increase & bun decrease is it normally they fluctuate?

They fluctuate: Especially if you put on a some muscle. When I was lifting weights every day, my creatinine ran 1.6-1.8. BUN goes up if you eat a steak. Best wishes. 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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Should I be concerned with normal BUN, creatinine of 1.16, and GFR 53?

Depends on age: If you are overall healthy and young then the GFR is a touch low. If you are older and the GFR is holding steady it's nothing to worry about. The creatinine is less significant, we usually focus on the GFR. Contact us for more details but it doesn't sound alarming. Read more

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I have Creatinine level of 1.2, normal BUN, GFR of 56, I'm 31, prolacton level of 82. Any suggestions?

Um, those are: Not necessarily abnormal. Prolactin has more significance if it is sky high (it isn't). The others at most would probalby indicate a bit of dehydration. Read more

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What causes elevated bun/creatinine ratio?

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 causes elevated bun/creatinine ratio?

What causes elevated bun/creatinine ratio?

Many causes: Blood tests called BUN (blood urea nitrogen) and cr (creatinine) are often checked to help evaluate kidney function. The normal bun/cr ration is about 10:1 to 15:1. Some of the more common causes of an elevated bun/cr ratio are: dehydration, GI bleeding, increased protein intake, small amount of muscle mass, increased muscle breakdown. Read more

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What causes an elevated bun/creatinine ratio?

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 an elevated bun/creatinine ratio mean?

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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Is a BUN/CREATININE Ratio of 29 normal in a 38 yr old woman?

No worries: If your BUN and creatinine are both normal, the ratio has little significance. It may reflect mild dehydration. Drink more water. Read more