What causes high MCH and low FT4 thyroid?

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

If your MCH is in between 27 pg and 32 pg 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 MCH 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 MCH : 27 - 32 pg

Ideal values of MCH depending on age :

Age	Ideal MCH value
<5 years	27.675
5-10 years	28.367
10-15 years	29.076
15-20 years	29.803
20-25 years	30.548
25-30 years	31.312
30-35 years	31.293
35-40 years	31.273
40-45 years	31.254
45-50 years	31.234
50-55 years	31.215
55-60 years	31.995
60-70 years	31.975
70-80 years	31.955
80-90 years	31.935
90-100 years	31.915
>100 years	31.895

*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 FT4 thyroid : 0.89 - 1.76 ng/dL

Ideal values of FT4 thyroid depending on age :

Age	Ideal FT4 thyroid value
<5 years	0.91225
5-10 years	0.93506
10-15 years	0.95844
15-20 years	0.9824
20-25 years	1.00696
25-30 years	1.03213
30-35 years	1.05793
35-40 years	1.08438
40-45 years	1.11149
45-50 years	1.13928
50-55 years	1.16776
55-60 years	1.19695
60-70 years	1.22687
70-80 years	1.25754
80-90 years	1.28898
90-100 years	1.3212
>100 years	1.35423

High MCH and low FT4 thyroid can be caused by a lot of reasons. If you take MCH and FT4 thyroid blood tests and the results are higher than 32 pg for MCH 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 MCH and FT4 thyroid Tests Are Done :

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