What causes high MCV and low BUN?

high MCV

High MCV and low BUN can be caused by many reasons.

If your MCV is in between 83 fL and 101 fL and your BUN is in between 6 mg/dL and 20 mg/dL then you need not worry as these are the normal ranges for MCV and BUN respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

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Normal range of MCV : 83 - 101 fL

Ideal values of MCV depending on age :
Age Ideal MCV value
<5 years 86.245
5-10 years 89.617
10-15 years 93.121
15-20 years 96.762
20-25 years 100.545
25-30 years 100.391
30-35 years 100.237
35-40 years 100.084
40-45 years 99.931
45-50 years 99.778
50-55 years 99.625
55-60 years 99.472
60-70 years 99.32
70-80 years 99.168
80-90 years 99.016
90-100 years 98.865
>100 years 98.714

*Ideal values are calculated based on our database of patient records

If you want your blood test report to be interpreted by MCV specialist, then you can upload your report. Our MCV expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours. Upload blood test report now

1,37,160

Total number of patients treated

MCV treatment - Click to read 10 GOLDEN ARTICLES on Anemia

Some examples of conditions that increase or decrease MCV levels include:

  • Aplastic anemia
  • Cold agglutinin disease
  • Chronic hypoxia
  • Low vitamin B12 level
  • Myelodysplastic syndrome

If you want your blood test report to be interpreted by MCV specialist, you can upload your report. Our MCV expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours. Upload blood test report now

Normal range of BUN : 6 - 20 mg/dL

Ideal values of BUN depending on age :
Age Ideal BUN value
<5 years 6.235
5-10 years 6.479
10-15 years 6.732
15-20 years 6.995
20-25 years 7.269
25-30 years 7.553
30-35 years 7.848
35-40 years 8.155
40-45 years 8.474
45-50 years 8.805
50-55 years 9.149
55-60 years 9.507
60-70 years 9.879
70-80 years 10.265
80-90 years 10.666
90-100 years 11.083
>100 years 11.516

High MCV and low BUN can be caused by a lot of reasons. If you take MCV and BUN blood tests and the results are higher than 101 fL for MCV and lower than 6 mg/dL for BUN, your physician may recommend more tests to figure out the problem. You might also get these tests if your physician thinks you have some other disease.

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How the MCV and BUN Tests Are Done :

If your doctor wants MCV and BUN tests on you, you may need to go through these tests. During the MCV and BUN blood tests, a pathologist will put a needle into your veins and take out a small quantity of blood. A pathologist is a physician in the medical field who thoroughly studies the causes and effects of disease. Within a few hours you will get your MCV and BUN Test reports by your pathologist.

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Dr. Dwayne Michaels
Guest Author
medchunk-doctor
Dr. Dwayne Michaels
Guest Author
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