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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

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Dr. Eric Weisman
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Dr. Ashu Syal
656 doctors shared insights

Dehydration (Definition)

In physiology and medicine, dehydration (hypohydration) is the excessive loss of body water, with an accompanying ...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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Dr. Eric Weisman
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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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Dr. Eric Weisman
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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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How can I lower my creatinine and bun levels?

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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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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I am 49 year old male in good general . A recent blood test showed bun level at 27 and creatinine level at 1.4. Should i be concerned? What are possible causes?

I am 49  year old male in good general .  A recent blood test showed bun level at 27 and creatinine level at 1.4. Should i be concerned? What are possible causes?

Dehydration?: Sounds like dehydration (if no kidney disease) as we grow younger, we cannot rely on our thirst, and have to drink by the clock... Our osmotic receptors get old before we do. ...Read more

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What does it mean when my creatinine serum level is .52 and my bun creatinine ratio is 23h?

Normal kidney levels: You may have mild dehydration based on BUN to creatinine ratio of more than 20. Make sure, though, that your urinalysis is normal. ...Read more

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Dr. Madhu Kandarpa
2,128 doctors shared insights

Creatinine (Definition)

It is a byproduct of creatine phosphate which is present in muscles. Levels are increased ...Read more


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Dr. Eric Weisman
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