What causes high MCH and low BUN?

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

If your MCH is in between 27 pg and 32 pg 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 MCH and BUN respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

Normal range of MCH : 27 - 32 pg

Ideal values of MCH depending on age :

Age	Ideal MCH value
<5 years	27.651
5-10 years	28.317
10-15 years	28.999
15-20 years	29.698
20-25 years	30.414
25-30 years	31.147
30-35 years	31.898
35-40 years	31.88
40-45 years	31.861
45-50 years	31.843
50-55 years	31.824
55-60 years	31.806
60-70 years	31.788
70-80 years	31.769
80-90 years	31.751
90-100 years	31.732
>100 years	31.714

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

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

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

• An overactive thyroid gland
• Complications from an infection
• An autoimmune disease
• Thalassemia, an inherited blood disorder
• Liver diseases

If you want your blood test report to be interpreted by MCH specialist, you can upload your report. Our MCH 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	6.145
5-10 years	6.293
10-15 years	6.445
15-20 years	6.6
20-25 years	6.759
25-30 years	6.922
30-35 years	7.089
35-40 years	7.26
40-45 years	7.435
45-50 years	7.614
50-55 years	7.797
55-60 years	7.985
60-70 years	8.177
70-80 years	8.374
80-90 years	8.576
90-100 years	8.783
>100 years	8.995

High MCH and low BUN can be caused by a lot of reasons. If you take MCH and BUN blood tests and the results are higher than 32 pg for MCH 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 MCH and BUN Tests Are Done :

If your doctor wants MCH and BUN tests on you, you may need to go through these tests. During the MCH 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 MCH and BUN Test reports by your pathologist.

Medical References

• WebMD – MCH Levels (Mean Corpuscular Hemoglobin) From Blood Test
• Cleveland Clinic – MCH in a Blood Test (Mean Corpuscular Hemoglobin)
• NIH – Red Cell Indices