What causes high FT4 thyroid and low HbA1c?

High FT4 thyroid and low HbA1c can be caused by many reasons.

If your FT4 thyroid is in between 0.89 ng/dL and 1.76 ng/dL and your HbA1c is in between 4 % and 5.7 % then you need not worry as these are the normal ranges for FT4 thyroid and HbA1c 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	0.91821
5-10 years	0.94732
10-15 years	0.97735
15-20 years	1.00833
20-25 years	1.04029
25-30 years	1.07327
30-35 years	1.10729
35-40 years	1.14239
40-45 years	1.1786
45-50 years	1.21596
50-55 years	1.25451
55-60 years	1.29428
60-70 years	1.33531
70-80 years	1.37764
80-90 years	1.42131
90-100 years	1.46637
>100 years	1.51285

*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

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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 HbA1c : 4 - 5.7 %

Ideal values of HbA1c depending on age :

Age	Ideal HbA1c value
<5 years	4.127
5-10 years	4.258
10-15 years	4.393
15-20 years	4.532
20-25 years	4.676
25-30 years	4.824
30-35 years	4.977
35-40 years	5.135
40-45 years	5.298
45-50 years	5.466
50-55 years	5.639
55-60 years	5.634
60-70 years	5.629
70-80 years	5.623
80-90 years	5.617
90-100 years	5.611
>100 years	5.605

High FT4 thyroid and low HbA1c can be caused by a lot of reasons. If you take FT4 thyroid and HbA1c blood tests and the results are higher than 1.76 ng/dL for FT4 thyroid and lower than 4 % for HbA1c, 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 FT4 thyroid and HbA1c Tests Are Done :

If your doctor wants FT4 thyroid and HbA1c tests on you, you may need to go through these tests. During the FT4 thyroid and HbA1c 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 HbA1c Test reports by your pathologist.