What causes high FT4 thyroid and low Thrombin Time?

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

If your FT4 thyroid is in between 0.89 ng/dL and 1.76 ng/dL and your Thrombin Time is in between 0 sec and 23 sec then you need not worry as these are the normal ranges for FT4 thyroid and Thrombin Time 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	0.92338
5-10 years	0.95801
10-15 years	0.99394
15-20 years	1.03121
20-25 years	1.06988
25-30 years	1.11
30-35 years	1.15163
35-40 years	1.19482
40-45 years	1.23963
45-50 years	1.28612
50-55 years	1.33435
55-60 years	1.38439
60-70 years	1.4363
70-80 years	1.49016
80-90 years	1.54604
90-100 years	1.60402
>100 years	1.66417

*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 Thrombin Time : 0 - 23 sec

Ideal values of Thrombin Time depending on age :

Age	Ideal Thrombin Time value
<5 years	1.038
5-10 years	1.077
10-15 years	1.117
15-20 years	1.159
20-25 years	1.202
25-30 years	1.247
30-35 years	1.294
35-40 years	1.343
40-45 years	1.393
45-50 years	1.445
50-55 years	1.499
55-60 years	1.555
60-70 years	1.613
70-80 years	1.673
80-90 years	1.736
90-100 years	1.801
>100 years	1.869

High FT4 thyroid and low Thrombin Time can be caused by a lot of reasons. If you take FT4 thyroid and Thrombin Time blood tests and the results are higher than 1.76 ng/dL for FT4 thyroid and lower than 0 sec for Thrombin Time, 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 Thrombin Time Tests Are Done :

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