What causes high MCV and low APTT?

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

If your MCV is in between 83 fL and 101 fL and your APTT is in between 22 seconds and 35 seconds then you need not worry as these are the normal ranges for MCV and APTT 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	86.403
5-10 years	89.946
10-15 years	93.634
15-20 years	97.473
20-25 years	97.309
25-30 years	97.146
30-35 years	96.983
35-40 years	100.959
40-45 years	100.789
45-50 years	100.619
50-55 years	100.449
55-60 years	100.28
60-70 years	100.111
70-80 years	99.943
80-90 years	99.775
90-100 years	99.607
>100 years	99.44

*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 APTT : 22 - 35 seconds

Ideal values of APTT depending on age :

Age	Ideal APTT value
<5 years	22.902
5-10 years	23.841
10-15 years	24.818
15-20 years	25.836
20-25 years	26.895
25-30 years	27.998
30-35 years	29.146
35-40 years	30.341
40-45 years	31.585
45-50 years	32.88
50-55 years	34.228
55-60 years	34.17
60-70 years	34.113
70-80 years	34.056
80-90 years	33.998
90-100 years	33.941
>100 years	33.884

High MCV and low APTT can be caused by a lot of reasons. If you take MCV and APTT blood tests and the results are higher than 101 fL for MCV and lower than 22 seconds for APTT, 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 APTT Tests Are Done :

If your doctor wants MCV and APTT tests on you, you may need to go through these tests. During the MCV and APTT 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 APTT 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