What causes high MCV and low RDW SD?

High MCV and low RDW SD can be caused by many reasons.

If your MCV is in between 83 fL and 101 fL and your RDW SD is in between 39 fL and 46 fL then you need not worry as these are the normal ranges for MCV and RDW SD 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 MCV : 83 - 101 fL

Ideal values of MCV depending on age :

Age	Ideal MCV value
<5 years	86.486
5-10 years	90.118
10-15 years	93.903
15-20 years	97.847
20-25 years	97.675
25-30 years	97.502
30-35 years	97.33
35-40 years	97.158
40-45 years	96.987
45-50 years	96.815
50-55 years	100.881
55-60 years	100.703
60-70 years	100.526
70-80 years	100.349
80-90 years	100.172
90-100 years	99.995
>100 years	99.819

*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

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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 RDW SD : 39 - 46 fL

Ideal values of RDW SD depending on age :

Age	Ideal RDW SD value
<5 years	40.638
5-10 years	42.345
10-15 years	44.123
15-20 years	45.976
20-25 years	45.895
25-30 years	45.814
30-35 years	45.733
35-40 years	45.653
40-45 years	45.572
45-50 years	45.492
50-55 years	45.412
55-60 years	45.332
60-70 years	45.252
70-80 years	45.173
80-90 years	45.093
90-100 years	45.014
>100 years	44.935

High MCV and low RDW SD can be caused by a lot of reasons. If you take MCV and RDW SD blood tests and the results are higher than 101 fL for MCV and lower than 39 fL for RDW SD, 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 RDW SD Tests Are Done :

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

Medical References

• MedlinePlus – MCV (Mean Corpuscular Volume)
• Cleveland Clinic – Mean Corpuscular Volume (MCV) Blood Test
• WebMD – Mean Corpuscular Volume (MCV) Blood Test