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Doctor insights on: Bun And Creatinine Levels In Dehydration

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How does bun and creatinine gets elevated due to dehydration? Kindly explain how?

How does bun and creatinine gets elevated due to dehydration? Kindly explain how?

Concentration: Simplest way, if you have lets say 100 particles in 5 liter of fluid, the concentration is 20 per liter. If you now have only 3 liter of fluid, the concentration is now 33.3. ...Read more

Dr. Madhu Kandarpa
2,203 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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How can the bun/creatinine ratio show dehydration?

How can the bun/creatinine ratio show dehydration?

BUN/Cr > 20:1: Urea (BUN) is reabsorbed by the kidney; creatinine is not. In dehydration, as water decreases and urea is reabsorbed, the BUN rises. Eventually, the cr will rise, too (if dehydration continues), but it doesn't increase in magnitude as fast as the bun. The bun/cr ration is usually ~10:1...When it's greater than 20:1, this suggests dehydration. ...Read more

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How can the bun/creatinine ratio indicate dehydration?

May be helpful: There are many causes of an elevated BUN or elevated creatinine, and the ratio between them must be interpreted in the clinical context of each specific patient. What is commonly referred to as "dehydration" usually causes an increase in the BUN to creatinine ratio, but other significant conditions may cause a similar rise and need to be considered, especially if there is an acute illness involved. ...Read more

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How can the bun/creatinine ratio tell you have dehydration?

How can the bun/creatinine ratio tell you have dehydration?

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. ...Read more

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How does the bun/creatinine ratio show whether or not you have dehydration?

How does the bun/creatinine ratio show whether or not you have dehydration?

BUN/Creatinine ratio: Blood urea nitrogen (BUN) is the breakdown of protein excreted via kidney. Creatinine is the muscle breakdown product also excreted by the kidney. BUN and creatinine can be measured by lab tests. Usually the BUN / creatinine ratio has to to be over 20 for a patient to be considered dehydrated or in "pre renal kidney failure. ...Read more

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My potassium is high but i'm not dehydrated. Bun/creatinine ratio is high and other electrolytes are borderline. What could be wrong?

My potassium is high but i'm not dehydrated. Bun/creatinine ratio is high and other electrolytes are borderline. What could be wrong?

May be...: The depicted scenario leads one to think: kidney damage, drug misuse / side effects, internal bleeding to gi-tract, etc. If no dehydration. So, ask and check with doctor for detail and he/she can help you. ...Read more

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What over-the-counter meds affect creatinine and bun levels?

What over-the-counter meds affect creatinine and bun levels?

Painkillers: Specifically, non steroidal (nsaids) can sometimes affect renal function and increase your BUN and creatinine levels. ...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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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 does it mean if your creatinine level is too high 1.16 and your bun/creatinine ratio is very low at a 5?

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

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.") ...Read more

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What is a bun/creatinine ratio? How is it calculated and if mine is 22 but my other levels are fine what should I do?

What are the actual: Numbers? BUN number divided by creatinine number. Normal range is 10-20. 22 may not be abnormal if individual levels of BUN and creatinine are normal. Discuss the numbers with your doctor at the next visit. ...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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How can I lower my creatinine and bun levels?

Only if due to : Dehydration. If the elevation is due to dehydration you may lower it by drinking water. However, in almost all instances elevated BUN and especially creatinine. Warrant seeing your doctor asap. ...Read more

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Can creatinine levels become high because of dehydration?

Can creatinine levels become high because of dehydration?

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

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

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. ...Read more

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

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. ...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

Dr. Ashu Syal
655 doctors shared insights

Dehydration (Definition)

The excessive loss of body water, with an accompanying ...Read more