What causes high Prothrombin time and low APTT?

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

If your Prothrombin time is in between 12 seconds and 16 seconds and your APTT is in between 22 seconds and 35 seconds then you need not worry as these are the normal ranges for Prothrombin time and APTT 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 12.127
5-10 years 12.256
10-15 years 12.386
15-20 years 12.517
20-25 years 12.65
25-30 years 12.784
30-35 years 12.92
35-40 years 13.057
40-45 years 13.195
45-50 years 13.335
50-55 years 13.476
55-60 years 13.619
60-70 years 13.763
70-80 years 13.909
80-90 years 14.056
90-100 years 14.205
>100 years 14.356

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

Your Prothrombin time result may be wrong. Click to know the reason in detail

Click here to know Symptoms of High Prothrombin time

Click here to know Symptoms of Low APTT

Besides Lab test failures, there are many other reasons for inaccurate blood results. Know the common reasons for inaccurate blood test results

Normal range of Prothrombin time found among women : - seconds

Ideal values of APTT depending on age :
Age Ideal APTT value
<5 years 22.233
5-10 years 22.469
10-15 years 22.707
15-20 years 22.948
20-25 years 23.191
25-30 years 23.437
30-35 years 23.685
35-40 years 23.936
40-45 years 24.19
45-50 years 24.446
50-55 years 24.705
55-60 years 24.967
60-70 years 25.232
70-80 years 25.499
80-90 years 25.769
90-100 years 26.042
>100 years 26.318

Click here to know Symptoms of High Prothrombin time

Click here to know Symptoms of Low APTT

Click here to upload your blood test report

Click here to consult a doctor for your Low Prothrombin time problem

High Prothrombin time and low APTT can be caused by a lot of reasons. If you take Prothrombin time and APTT blood tests and the results are higher than 16 seconds for Prothrombin time and lower than 22 seconds for APTT, 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 APTT Tests Are Done :

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

Click here to upload your blood test report

Click here to consult a doctor for your Low Prothrombin time problem

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