What causes high FT4 thyroid and low Vitamin B12?

High FT4 thyroid and low Vitamin B12 can be caused by many reasons.

If your FT4 thyroid is in between 0.89 ng/dL and 1.76 ng/dL and your Vitamin B12 is in between 211 pg/mL and 911 pg/mL then you need not worry as these are the normal ranges for FT4 thyroid and Vitamin B12 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 FT4 thyroid : 0.89 - 1.76 ng/dL

Ideal values of FT4 thyroid depending on age :

Age	Ideal FT4 thyroid value
<5 years	0.92151
5-10 years	0.95413
10-15 years	0.98791
15-20 years	1.02288
20-25 years	1.05909
25-30 years	1.09658
30-35 years	1.1354
35-40 years	1.17559
40-45 years	1.21721
45-50 years	1.2603
50-55 years	1.30491
55-60 years	1.3511
60-70 years	1.39893
70-80 years	1.44845
80-90 years	1.49973
90-100 years	1.55282
>100 years	1.60779

*Ideal values are calculated based on our database of patient records

If you want your blood test report to be interpreted by FT4 thyroid specialist, then you can upload your report. Our FT4 thyroid expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours. Upload blood test report now

1,37,160

Total number of patients treated

Some examples of conditions that increase or decrease FT4 thyroid levels include:

• Autoimmune disease
• A non-functioning thyroid gland
• Thyroiditis
• Diabetes
• Liver disease

If you want your blood test report to be interpreted by FT4 thyroid specialist, you can upload your report. Our FT4 thyroid 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 Vitamin B12 : 211 - 911 pg/mL

Ideal values of Vitamin B12 depending on age :

Age	Ideal Vitamin B12 value
<5 years	218.469
5-10 years	226.203
10-15 years	234.211
15-20 years	242.502
20-25 years	251.087
25-30 years	259.975
30-35 years	269.178
35-40 years	278.707
40-45 years	288.573
45-50 years	298.788
50-55 years	309.365
55-60 years	320.317
60-70 years	331.656
70-80 years	343.397
80-90 years	355.553
90-100 years	368.14
>100 years	381.172

High FT4 thyroid and low Vitamin B12 can be caused by a lot of reasons. If you take FT4 thyroid and Vitamin B12 blood tests and the results are higher than 1.76 ng/dL for FT4 thyroid and lower than 211 pg/mL for Vitamin B12, 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.

This page has got the maximum number of views from the below mentioned cities (traffic in last 30 days):

How the FT4 thyroid and Vitamin B12 Tests Are Done :

If your doctor wants FT4 thyroid and Vitamin B12 tests on you, you may need to go through these tests. During the FT4 thyroid and Vitamin B12 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 FT4 thyroid and Vitamin B12 Test reports by your pathologist.