What causes high Prothrombin time and low FT3 thyroid?

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

If your Prothrombin time is in between 12 seconds and 16 seconds and your FT3 thyroid is in between 2.3 pg/mL and 4.2 pg/mL then you need not worry as these are the normal ranges for Prothrombin time and FT3 thyroid 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 Prothrombin time : 12 - 16 seconds

Ideal values of Prothrombin time depending on age :

Age	Ideal Prothrombin time value
<5 years	12.126
5-10 years	12.253
10-15 years	12.382
15-20 years	12.512
20-25 years	12.643
25-30 years	12.776
30-35 years	12.91
35-40 years	13.045
40-45 years	13.182
45-50 years	13.32
50-55 years	13.46
55-60 years	13.601
60-70 years	13.744
70-80 years	13.888
80-90 years	14.034
90-100 years	14.181
>100 years	14.33

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

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

• Liver disease
• Vitamin K abnormality
• Hemophilia A and hemophilia B
• Decreased or defective factor I (fibrinogen), II (prothrombin), V or X
• Willebrand disease

If you want your blood test report to be interpreted by Prothrombin time specialist, you can upload your report. Our Prothrombin time 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 FT3 thyroid : 2.3 - 4.2 pg/mL

Ideal values of FT3 thyroid depending on age :

Age	Ideal FT3 thyroid value
<5 years	2.324
5-10 years	2.348
10-15 years	2.373
15-20 years	2.398
20-25 years	2.423
25-30 years	2.448
30-35 years	2.474
35-40 years	2.5
40-45 years	2.526
45-50 years	2.552
50-55 years	2.579
55-60 years	2.606
60-70 years	2.633
70-80 years	2.661
80-90 years	2.689
90-100 years	2.717
>100 years	2.746

High Prothrombin time and low FT3 thyroid can be caused by a lot of reasons. If you take Prothrombin time and FT3 thyroid blood tests and the results are higher than 16 seconds for Prothrombin time and lower than 2.3 pg/mL for FT3 thyroid, 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 Prothrombin time and FT3 thyroid Tests Are Done :

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