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Doctor insights on: Low Bun Lab Value

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Recently went and did lab work. Got 1.73 for my ml/min and 124 for my gfr. My bun is low at level 8. Should I be concerned? Is this normal?

Recently went and did lab work. Got 1.73 for my ml/min and 124 for my gfr. My bun is low at level 8. Should I be concerned? Is this normal?

Stop worrying: This is fine. Your BUN might be low because you had a salad with cucumbers rather than a burger the day before. "reference ranges" are set so that a few % of healthies fall outside on either end. ...Read more

Dr. Creighton Wright
4 Doctors shared insights

Laboratory (Definition)

Is facility that provides controlled conditions in which scientific research, experiments & measurements are performed. An example is medical (clinical) lab where tests are done on clinical specimens in order to get info. About the health of a patient in terms ...Read more


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BUN 10, Creatine 1.05. All other labs normal. Low BUN creatine ration. Read this is a sign of liver disease?

BUN 10, Creatine 1.05. All other labs normal. Low BUN creatine ration. Read this is a sign of liver disease?

Not liver: This is a measure of kidney function and hydration status. These levels may be normal depending on your age and which lab method was used. The creat may also be a little high. This is something you should check with your doc. ...Read more

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My son is 11 he had labs done they said his bun was one point low and liver enzymes were 272 what's that mean?

My son is 11 he had labs done they said his bun was one point low and liver enzymes were 272 what's that mean?

This could hepatitis: This could be hepatitis. The low BUN is not a major problem. You need to ask your physician if this is hepatitis and is it due to infection, medications etc ...Read more

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BUN of 10 with creatinine of 1.05 year ago BUN of 12 creatinine. 89. Now have low bun/creatine level and GFR of 58. Urine and all other lab's normal.

BUN of 10 with creatinine of 1.05 year ago BUN of 12 creatinine. 89. Now have low bun/creatine level and GFR of 58. Urine and all other lab's normal.

Normal: Your kidney function looks normal. The GFR is an estimated value that is highly dependent on a variety of factors like age, weight, meds and hydration level at the time of the test. Hope it helps. ...Read more

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I know it's not good. Drink diet pop all day. But Y would my labs show LOW sodium (129) low bun/creatine ratio? I drink lot of sodium?? Neuro confused

I know it's not good. Drink diet pop all day. But Y would my labs show LOW sodium (129) low bun/creatine ratio? I drink lot of sodium?? Neuro confused

Confusing: Hard to say. Unless you are drinking excessive amounts of soda and water it shouldn't drop your sodium. Your nephrologist should be able to determine the source of the low sodium. ...Read more

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Labs show a bun of 2, but total protein plasma is high at 8.4. Albumin is 3.8. Feeds are formula and past low bun has been lack of protein.?

Labs show a bun of 2, but total protein plasma is high at 8.4. Albumin is 3.8. Feeds are formula and past low bun has been lack of protein.?

Probably ok: Everything has to be taken in context. There are no simple answers. BUN is a waste product of protein metabolism and low level is not necessarily bad. The Albumin level is good and reflects enough protein nutrition. In this case total protein may be high because of high globulins which again may be ok in a 9 yr old. Normal weight and growth is more reliable, + indicative health than lab test. ...Read more

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Since 1year low urin output. Labs Cr, BUN, Echo ok, no weight gain. Today hot day 2, 5L water input and just 1little miction and not feel like pee. Causes? Tx

Since 1year low urin output. Labs Cr, BUN, Echo ok, no weight gain. Today hot day 2, 5L water input and just 1little miction and not feel like pee. Causes? Tx

Question: You can lose a lot of fluid through sweat, stool and other means. If your urine is fairly clear and not deep yellow you are probably taking in enough water. ...Read more

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Do these lab results mean I have a bleeding issue/thin blood? Mpv 9.0 fl l, bun 7mg/dl l, bun/creat ratio 8 l, alb/glob 0.9 l. L=low. Can u translate?

Do these lab results mean I have a bleeding issue/thin blood? Mpv 9.0 fl l, bun 7mg/dl l, bun/creat ratio 8 l, alb/glob 0.9 l. L=low. Can u translate?

Inconclusive: For the most part, the tests that you list are important in the context of what other numbers are. Mpv is a measure of the plumpness of your platelets, and platelets are important for blood clotting. But, the actual number of platelets (should be >150) is usually more important for bleeding issues. If that number is fine, then this slightly low mpv level could just represent a mild viral infection. ...Read more

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"i just had lab work done and got the results and it show that the bun/creatinine ratio is low, it is 10.0 should I have concern I have been retaining fluids, and I have not been urinating very often.

"i just had lab work done and got the results and it show that the bun/creatinine ratio is low, it is 10.0 should I have concern I have been retaining fluids, and I have not been urinating very often.

If: If you take no meds, the creatinine was 1.0 or less, and are generally healthy then this ratio is usually of very limited use. It does help establish volume status in people with other things going on. Your doctor really should review these results with you, but in general this ratio low isn't usually a big deal. ...Read more

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What med issues might labs suggest? BUN & CL/HIGH. EGFR 59.7/54.8 Low. FR T-4/Low. Bad Chol/Good Chol very low. Wbc/rbc Low HCT/Low MCV High

What med issues might labs suggest? BUN & CL/HIGH. EGFR 59.7/54.8 Low. FR T-4/Low. Bad Chol/Good Chol very low. Wbc/rbc Low HCT/Low MCV High

Listen Charlie: Please forgive me. I'm a pathologist focused on lab medicine. Labs mean NOTHING in the absence of a history and physical exam. And labs are not simply "high" or "low". These may be the labs of a bodybuilder with hookworms, or a man gravely sick. All I know is that if your physician won't sit and explain your labs -- and these worry me greatly -- get with some else. ...Read more

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Is a lab result of 48% for lymphocytes and 9.7 Bun/creatnin of any concern. Low vitamin D/25 hdroxy 21.5....Ige level of 497. Thank you?

Is a lab result of 48% for lymphocytes and 9.7 Bun/creatnin of any concern. Low vitamin D/25 hdroxy 21.5....Ige level of 497. Thank you?

Out of context: Lab values out of context = difficult to interpret. "Abnormal" may be irrelevant, even normal for an individual. Experts disagree on low end of normal 25-OH vit D (some say 20 some 30).IgE can be high for many reasons, most allergic. BUN/Cr relevance depends on what BUN and Cr are - if normal, low BUN/Cr can be malnutrition, liver problem, or OK. Lymphocyte% relevance depends on wbc, neutrophil% etc. ...Read more

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On prednisone x 6 months. Sle. Down to 6 mg daily. Cr & bun has incr on 2 labs a month a part. Have low lymphocytes and hi granulocytes. Pred cause?

On prednisone x 6 months. Sle. Down to 6 mg daily. Cr & bun has incr on 2 labs a month a part. Have low lymphocytes and hi granulocytes. Pred cause?

See details: You do not provide specific values for the BUN or creatinine or results of a urinalysis so specific advice cannot be given. However, you need to be certain that these changes do not reflect kidney involvement from your lupus. You are already on CellCept (mycophenolate mofetil) so there has to be some issue there. The cell counts may be related to prednisone. ...Read more

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What causes enlarged liver (20.5cm) with normal LFTs? Only abnormal labs in ER were low creatinine (0.5) and low BUN (5). No masses on CT. 24yo, BMI 25, no etoh. What should I ask my dr next week?

What causes enlarged liver (20.5cm) with normal LFTs? Only abnormal labs in ER were low creatinine (0.5) and low BUN (5). No masses on CT. 24yo, BMI 25, no etoh. What should I ask my dr next week?

Enlarged liver: As a start, someone needs to reevaluate that test and determine what portion of the liver was measured. 20 cm at the midclavicular line is large, but it is not in other planes. In the US, the most likely reason would be fatty liver, which is supported by the BMI of 25, which the NIH would say is overweight, but you need to be evaluated by a hepatologist to be sure nothing else is missed. ...Read more

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My labs came back and my bun/ creatinine was 23.?

Bun/creatinine ratio: This is only mildly elevated. If all other labs are normal and you are urinated a normal volume, likely cause is dehydration. followup with your doctor if symptoms persist or worsen ...Read more

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My labs came back with my Bun 7 GFR 79 is this normal for a 64 white female?

My labs came back with my Bun 7 GFR 79 is this normal for a 64 white female?

Yes: BUN can be influenced by hydration status (how much fluid intake you have daily) and goes up if you are dehydrated. A level of 7 is normal. GFR stands for glomerular filtration rate and is a gauge of how well your kidneys are filtering your blood. GFR is usually estimated from the blood creatinine level, which you did not provide. Since GFR is normal, can assume creatinine is fine as well. ...Read more

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I'm 63 and my BUN lab came back 8 should I be concerned. GFR was 60?

I'm 63 and my BUN lab came back 8 should I be concerned. GFR was 60?

No: GFR, or glomerular filtration rate of the kidney, is calculated from the serum creatinine, not BUN. Your BUN is low-normal and is of no concern. Calculation of GFR from the creatinine is subject to various confounders which can make it difficult to interpret. A GFR of 60 at your age is almost certainly normal. ...Read more

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Creatinine increased. 16 from. 89 to 1.05. BUN went from 12 to 10. All other labs great.60 year old 200 lbs work out 5 days a week. Is this CKD or so?

Creatinine increased. 16 from. 89 to 1.05. BUN went from 12 to 10. All other labs great.60 year old 200 lbs work out 5 days a week. Is this CKD or so?

Normal BUN & Cr: Weight loss may be beneficial depending on your BMI. The numbers due not suggest CKD. Protein in the urine needs to be assessed for as indicated. ...Read more

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1 month ago lab tests Cr 0.74mg/dl, BUN 12, 1mg/dl. Results today show Cr 1.1 and BUN 19.1.I know both are below limits but is normal this increase? Txs

1 month ago lab tests Cr 0.74mg/dl, BUN 12, 1mg/dl. Results today show Cr 1.1 and BUN 19.1.I know both are below limits but is normal this increase? Txs

Renal: This fluctuation can be explained by change in fluid status. You do have hypertension, but if controlled that should not effect your renal function in a month. If feeling OK I would not worry about this. If concerned I would wait atleast a month till I recheck it. ...Read more

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Explanation of lab work. BUN, CRE, AST, and ALT.

Explanation of lab work. BUN, CRE, AST, and ALT.

Unclear question: BUN and creatinine are indicators of kidney function and AST/ALT indicate liver cell damage. ...Read more

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Recent labs showed Creatine 1.05 and BUN 10 all other labs and Urine normal. The 1.05 is an year over year increase from. 89 putting my EGFR at 58?

Recent labs showed Creatine 1.05 and BUN 10 all other labs and Urine normal. The 1.05 is an year over year increase from. 89 putting my EGFR at 58?

Consult nephrologist: Your eGFR puts you at risk and you should consult a nephrologist to make sure that a treatable condition is not being missed. It is not feasible to provide a more meaningful opinion without an in-person evaluation. ...Read more

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Labs: 8/11: bun 20/creatinine 1.4. 1/12: bun 20/creatinine 1.15. 6/1/12: bun 23/creatine 1.39. 6/20/12: bun 17/creatine 1.4. 7/24/12: bun 22/creatinine 1.4. 9/12: bun 24/creatine 1.3. Kidney failure?

Labs: 8/11: bun 20/creatinine 1.4. 1/12: bun 20/creatinine 1.15. 6/1/12: bun 23/creatine 1.39. 6/20/12: bun 17/creatine 1.4. 7/24/12: bun 22/creatinine 1.4. 9/12: bun 24/creatine 1.3. Kidney failure?

I'm puzzled.: Has there been something said that makes you think you are at risk for kidney failure? I'm not seeing this from your labs. The creatinine (a breakdown product from muscle and eliminated by the kidney) is a little generous - but it's not increasing. That's what you would typically see in kidney disease. I'm curious as to the number of tests you've had; make an appt with your doctor to clarify this. ...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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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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What does this mean when my lab result says Bun/creatinine ratio is 26.0? Should I be worry?

How do you FEEL?: This is a guide to managing the care of sick people, not a health screen. A petite young lady who eats a big steak can get this ratio, just as a heart failure patient can. Labs mean nothing in isolation. ...Read more

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Kidney transplanted 4 yrs. Last lab work bun went from 17 to 22 should I worry or is it ok? Could it be dehydration?

Kidney transplanted 4 yrs. Last lab work bun went from 17 to 22 should I worry or is it ok? Could it be dehydration?

Elevated BUN: By giving your slight increase of BUN is telling half the story. What happened to your sodium, chloride and creatinine (c) in the same time interval? You BUN went up by about 30%, if your c increased by less, dehydration is a possibility. If you have any questions about the status of your transplanted kidney, call your transplant nephrologists and get their opinion about your case. ...Read more