What causes high APTT and low FT3 thyroid?

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

If your APTT is in between 22 seconds and 35 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 APTT 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 APTT : 22 - 35 seconds

Ideal values of APTT depending on age :

Age	Ideal APTT value
<5 years	22.385
5-10 years	22.777
10-15 years	23.175
15-20 years	23.58
20-25 years	23.992
25-30 years	24.412
30-35 years	24.839
35-40 years	25.273
40-45 years	25.715
45-50 years	26.165
50-55 years	26.623
55-60 years	27.089
60-70 years	27.563
70-80 years	28.045
80-90 years	28.536
90-100 years	29.035
>100 years	29.543

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

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

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

If you want your blood test report to be interpreted by APTT specialist, you can upload your report. Our APTT 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	2.34
5-10 years	2.381
10-15 years	2.423
15-20 years	2.465
20-25 years	2.508
25-30 years	2.552
30-35 years	2.597
35-40 years	2.642
40-45 years	2.688
45-50 years	2.735
50-55 years	2.783
55-60 years	2.832
60-70 years	2.882
70-80 years	2.932
80-90 years	2.983
90-100 years	3.035
>100 years	3.088

High APTT and low FT3 thyroid can be caused by a lot of reasons. If you take APTT and FT3 thyroid blood tests and the results are higher than 35 seconds for APTT 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 APTT and FT3 thyroid Tests Are Done :

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