What causes high MCV and low TSH 3?

High MCV and low TSH 3 can be caused by many reasons.

If your MCV is in between 83 fL and 101 fL and your TSH 3 is in between 0.55 uIU/mL and 4.78 uIU/mL then you need not worry as these are the normal ranges for MCV and TSH 3 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	86.328
5-10 years	89.79
10-15 years	93.391
15-20 years	97.136
20-25 years	96.98
25-30 years	100.869
30-35 years	100.707
35-40 years	100.545
40-45 years	100.383
45-50 years	100.221
50-55 years	100.06
55-60 years	99.899
60-70 years	99.738
70-80 years	99.577
80-90 years	99.417
90-100 years	99.257
>100 years	99.097

*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 TSH 3 : 0.55 - 4.78 uIU/mL

Ideal values of TSH 3 depending on age :

Age	Ideal TSH 3 value
<5 years	0.572
5-10 years	0.595
10-15 years	0.619
15-20 years	0.644
20-25 years	0.67
25-30 years	0.697
30-35 years	0.725
35-40 years	0.754
40-45 years	0.784
45-50 years	0.815
50-55 years	0.848
55-60 years	0.882
60-70 years	0.917
70-80 years	0.954
80-90 years	0.992
90-100 years	1.032
>100 years	1.073

High MCV and low TSH 3 can be caused by a lot of reasons. If you take MCV and TSH 3 blood tests and the results are higher than 101 fL for MCV and lower than 0.55 uIU/mL for TSH 3, 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 TSH 3 Tests Are Done :

If your doctor wants MCV and TSH 3 tests on you, you may need to go through these tests. During the MCV and TSH 3 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 TSH 3 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