What causes high FT4 thyroid and low INR?

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

If your FT4 thyroid is in between 0.89 ng/dL and 1.76 ng/dL and your INR is in between 0.9 ratio and 1.2 ratio then you need not worry as these are the normal ranges for FT4 thyroid and INR 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	0.92329
5-10 years	0.95782
10-15 years	0.99364
15-20 years	1.0308
20-25 years	1.06935
25-30 years	1.10934
30-35 years	1.15083
35-40 years	1.19387
40-45 years	1.23852
45-50 years	1.28484
50-55 years	1.33289
55-60 years	1.38274
60-70 years	1.43445
70-80 years	1.4881
80-90 years	1.54375
90-100 years	1.60149
>100 years	1.66139

*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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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 INR : 0.9 - 1.2 ratio

Ideal values of INR depending on age :

Age	Ideal INR value
<5 years	0.934
5-10 years	0.969
10-15 years	1.005
15-20 years	1.043
20-25 years	1.082
25-30 years	1.122
30-35 years	1.164
35-40 years	1.163
40-45 years	1.161
45-50 years	1.159
50-55 years	1.157
55-60 years	1.2
60-70 years	1.198
70-80 years	1.197
80-90 years	1.196
90-100 years	1.195
>100 years	1.194

High FT4 thyroid and low INR can be caused by a lot of reasons. If you take FT4 thyroid and INR blood tests and the results are higher than 1.76 ng/dL for FT4 thyroid and lower than 0.9 ratio for INR, 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 INR Tests Are Done :

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