What causes high MCV and low FT4 thyroid?

High MCV and low FT4 thyroid can be caused by many reasons.

If your MCV is in between 83 fL and 101 fL and your FT4 thyroid is in between 0.89 ng/dL and 1.76 ng/dL then you need not worry as these are the normal ranges for MCV and FT4 thyroid 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	86.32
5-10 years	89.773
10-15 years	93.364
15-20 years	97.099
20-25 years	100.983
25-30 years	100.821
30-35 years	100.66
35-40 years	100.499
40-45 years	100.338
45-50 years	100.178
50-55 years	100.018
55-60 years	99.858
60-70 years	99.698
70-80 years	99.539
80-90 years	99.38
90-100 years	99.221
>100 years	99.062

*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 FT4 thyroid : 0.89 - 1.76 ng/dL

Ideal values of FT4 thyroid depending on age :

Age	Ideal FT4 thyroid value
<5 years	0.9256
5-10 years	0.96262
10-15 years	1.00112
15-20 years	1.04116
20-25 years	1.08281
25-30 years	1.12612
30-35 years	1.17116
35-40 years	1.21801
40-45 years	1.26673
45-50 years	1.3174
50-55 years	1.3701
55-60 years	1.4249
60-70 years	1.4819
70-80 years	1.54118
80-90 years	1.60283
90-100 years	1.66694
>100 years	1.73362

High MCV and low FT4 thyroid can be caused by a lot of reasons. If you take MCV and FT4 thyroid blood tests and the results are higher than 101 fL for MCV and lower than 0.89 ng/dL for FT4 thyroid, 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 FT4 thyroid Tests Are Done :

If your doctor wants MCV and FT4 thyroid tests on you, you may need to go through these tests. During the MCV and FT4 thyroid 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 FT4 thyroid 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