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Doctor insights on: What Is Bun

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What does bun/creatine ratio of 18 mean?

What does bun/creatine ratio of 18 mean?

Means normal kidneys: BUN (blood urea nitrogen) is a test for a number of certain chemicals in the blood. Creatinine is a specific chemical that is released from the muscles. These are filtered out by the kidneys into the urine. The ratio of 18 means 18 to 1 of BUN to creatinine ; it is normal. If the ratio is higher that means the circulation is not delivering blood fast enough to the kidneys. If the ratio lowers to 1. ...Read more

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What does bun/creatinine ratio of 29 mean?

What does bun/creatinine ratio of 29 mean?

Depends: The 'normal' ratio is 10:1, this will increase if you become volume depleted. Steroids, high protein diet, gastrointestinal bleeding and renal failure can raise the ratio. ...Read more

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What is BUN/Creat ratio my hospital range 12.0-20.0 mines was 10.5 so is something wrong with me?

What is BUN/Creat ratio my hospital range 12.0-20.0 mines was 10.5 so is something wrong with me?

Probably not: A 10:1 ratio is "normal", but there are a LOT of variable with this one. Simply being dehydrated is the most common cause of increased ratios, but age, muscle mass, overall health, medications and gender all play parts. I often caution both patients and students/residents to treat the patient, not the labs. If you're otherwise healthy and take care of yourself, don't get too worked by numbers. ...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 is a bun test?

What is a bun test?

Blood Urea Nitrogen: It is a test which identifies the breakdown products of urea in your blood. Urea is itself a breakdown product of proteins so that the BUN is an indirect measure of protein metabolism. BUN is elevated in kidney dysfunction, fever, increased catabolism, high protein diet and intestinal bleeding. ...Read more

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What does high BUN 44 mean?

What does high BUN 44 mean?

High BUN: May mean that you have kidney disease, or hemolytic anemia, or gastrointestinal bleeding, or stomach obstruction. Dehydration also can cause the level of blood urea nitrogen to be falsely higher. Thanks for trusting in HealthTap. ...Read more

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What does a bun of 28 mean on labwork?

What does a bun of 28 mean on labwork?

Blood urea nitrogen: BUN (Blood urea nitrogen) helps to indicate kidney function. Usually 7 to 20 mg/dL is normal in adults. ...Read more

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What does low bun level mean mine is 5?

What does low bun level mean mine is 5?

Blood urea nitrogen: Or bun, is an indicator of kidney function, fluid balance, muscle turnover (breakdown and rebuilding). Normal BUN is between 7 and 20. A low BUN could be seen in a person with lower muscle mass or low muscle use (ex a paraplegic person) where there is less muscle turnover than in more active people. This could also suggest malnutrition. A low BUN could also be seen in liver failure, pregnancy. ...Read more

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What does a bun/creatinine raion of 33 indicate?

What does a bun/creatinine raion of 33 indicate?

Nothing: Like all labs, it is meaningless apart from the clinical context. Maybe you had a big steak dinner. Maybe you are a very slender young girl. Maybe you are dehydrated after running a marathon in the blazing heat. Maybe you are in shock or end-stage congestive heart failure or suffering a massive GI bleed. If you feel reasonably well, don't even look at your labs -- they'll just trouble you. ...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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What causes elevated bun/creatinine ratio?

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 glucose, bun and creatine numbers to be high?

What causes glucose, bun and creatine numbers to be high?

Different things: Glucose high mean high blood sugar depend on if it was fasting or not or how high it could mean you might be diabetic
bun and creatinine are the kidney blood test if they are abnormal either you are dehydrated or you could be having kidney problem
the combination of all together if you are diabetic and you are having kidney problem could be a red flag for something serious check with your doctor. ...Read more

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What can low bun and creatinine indicate when you 21 yrs old?

Several things: Low cr may be completely normal in a young patient and indicates good kidney function. Other causes of low serum cr are low muscle mass, which can occur in very small stature people, advanced age, bed bound individuals, and in patients with cirrhosis. Low BUN can be caused by poor nutrition or increased fluid intake. ...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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CKD CHF patient on fluid 1L restriction BUN 53, Creatinine 2, going worse when on lasix (furosemide). at what BUN am I too dehydrated/cause for high BUN/C ratio?

CKD CHF patient on fluid 1L restriction BUN 53, Creatinine 2, going worse when on lasix (furosemide). at what BUN am I too dehydrated/cause for high BUN/C ratio?

Bun/creatinin ratio: Greater than 20 in the absence of GI bleeding usually indicate intra vascular volume depletion. If no peripheral edema discuss need for fluid restrictions with your doctor ...Read more

Dr. James Lin Dr. Lin
2 doctors agreed:
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My 8 month old son has been having some stomach issues and we just got some results back. I am curious to what a normal bun level, but a slightly higher creatinine serum level means. His ratio is also considered high.

Dr. James Lin Dr. Lin
2 doctors agreed:

Here are some...: You should refer your questions & concerns to his pediatrician who possesses more of his pertinent information than anyone online. Besides it is useful to always correlate the lab findings with individual clinical profile and compare with prior tests serially. To make a question easy to answer, always stress the specifics & relevance with sequence of events in the question. Best wish... ...Read more

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Weekly Diarrhea vomit low fever. Upper/lower scope Hida scan and WBC ok. RBC HGB HCT all 1 point low, MCV high. BUN 1 point low. What causes low BUN?

Weekly Diarrhea vomit low fever. Upper/lower scope Hida scan and WBC ok. RBC HGB HCT all 1 point low, MCV high. BUN 1 point low. What causes low BUN?

Lab results: It is difficult to interpret lab results without all of the background information and without seeing the labs themselves. Having said that, if it is only one point from the normal range, it is unlikely to be clinically significant. If you have the lab results available, you might consider a Healthtap Prime consult, for a more detailed answer. ...Read more

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What is a normal bun for a person with one kidney?

What is a normal bun for a person with one kidney?

Co-tango usually: A patient with one kidney should have a creatinine less than 1.0 mg/dl still. The BUN should be less than 10.
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.

Mild elevations of BUN with normal creatinines aren't of concern. ...Read more

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What does a high bun and creatinine reading indicate?

What does a high bun and creatinine reading indicate?

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 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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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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What does a high bun/creatinine ratio reading mean?

What does a high bun/creatinine ratio reading mean?

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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What does a high bun/creatinine and high glucose mean?

What does a high bun/creatinine and high glucose mean?

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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On a metabolic workup, what does a low bun/creatinine ratio reading mean?

Maybe, kidney diseas: In prior answers, explained bun, creatinine, normal ratio, and high ratio. Low ratio means that the BUN is likely low or normal with relation to the creatinine, indicating that there is adequate blood or volume flowing to the kidneys, but the kidneys are impaired or disease in some way. Need a nephrologist - kidney specialist. ...Read more

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During a metabolic workup, what does a high bun/creatinine ratio reading 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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What causes an elevated bun/creatinine ratio on your lab results?

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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Can you explain what 12.86mg/dl bun (blood urea nitrogen) and 1.34 mg/dl creatinine mean?

Normal: Seems normal- however could be slightly abnormal if this is a 90 yr old emaciated female or a very small child. ...Read more