What causes high FT3 thyroid and low HbA1c?

High FT3 thyroid and low HbA1c can be caused by many reasons.

If your FT3 thyroid is in between 2.3 pg/mL and 4.2 pg/mL and your HbA1c is in between 4 % and 5.7 % then you need not worry as these are the normal ranges for FT3 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 FT3 thyroid : 2.3 - 4.2 pg/mL

Ideal values of FT3 thyroid depending on age :

Age	Ideal FT3 thyroid value
<5 years	2.373
5-10 years	2.448
10-15 years	2.526
15-20 years	2.606
20-25 years	2.689
25-30 years	2.774
30-35 years	2.862
35-40 years	2.953
40-45 years	3.047
45-50 years	3.144
50-55 years	3.244
55-60 years	3.347
60-70 years	3.453
70-80 years	3.562
80-90 years	3.675
90-100 years	3.791
>100 years	3.911

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

If you want your blood test report to be interpreted by FT3 thyroid specialist, then you can upload your report. Our FT3 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 FT3 thyroid levels include:

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

If you want your blood test report to be interpreted by FT3 thyroid specialist, you can upload your report. Our FT3 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 FT3 thyroid and low HbA1c can be caused by a lot of reasons. If you take FT3 thyroid and HbA1c blood tests and the results are higher than 4.2 pg/mL for FT3 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 FT3 thyroid and HbA1c Tests Are Done :

If your doctor wants FT3 thyroid and HbA1c tests on you, you may need to go through these tests. During the FT3 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 FT3 thyroid and HbA1c Test reports by your pathologist.

Medical References

• MedlinePlus – Triiodothyronine (T3) Tests
• Cleveland Clinic – Triiodothyronine (T3) Test: What It Is, Function & Levels
• MedlinePlus – T3 test
• WebMD – T3 Tests: T3 Uptake Levels, Common Thyroid Conditions, and More
• NIH – How to interpret thyroid function tests