What does high Prothrombin time and APTT mean in blood test?

High Prothrombin time and APTT can be caused by numerous problems.

High levels of Prothrombin time and APTT in the blood indicate a variety of health problems. If your blood Prothrombin time level is between 12 seconds to 16 seconds and the APTT level is between 22 seconds to 35 seconds, then your body does not have any underlying health problems. But if Prothrombin time and APTT levels exceed these levels, you should see a doctor immediately.

Normal Prothrombin time range : 12 - 16 seconds

Age-wise ideal Prothrombin time level in blood:
Age Ideal Prothrombin time value
<5 years 12.163
5-10 years 12.328
10-15 years 12.496
15-20 years 12.666
20-25 years 12.838
25-30 years 13.013
30-35 years 13.19
35-40 years 13.369
40-45 years 13.551
45-50 years 13.735
50-55 years 13.922
55-60 years 14.111
60-70 years 14.303
70-80 years 14.498
80-90 years 14.695
90-100 years 14.895
>100 years 15.098

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 High APTT

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

Normal APTT range : 22 - 35 seconds

Age-wise ideal APTT level in blood:
Age Ideal APTT value
<5 years 22.299
5-10 years 22.602
10-15 years 22.909
15-20 years 23.221
20-25 years 23.537
25-30 years 23.857
30-35 years 24.181
35-40 years 24.51
40-45 years 24.843
45-50 years 25.181
50-55 years 25.523
55-60 years 25.87
60-70 years 26.222
70-80 years 26.579
80-90 years 26.94
90-100 years 27.306
>100 years 27.677

Click here to know Symptoms of High Prothrombin time

Click here to know Symptoms of High APTT

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High Prothrombin time and APTT levels in the blood can cause a number of health problems. Your GP may recommend follow-up tests to get an important picture of your overall health and well-being. If the results are greater than 16 seconds for Prothrombin time and more than 35 seconds for APTT, you may also need some follow-up tests that will help detect the underlying disease early.

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How is a blood test performed in the lab?

Depending on the symptoms you are experiencing, your doctor may order a Prothrombin time and APTT test. In most hospitals Prothrombin time and APTT results can be obtained within three to six hours after blood is taken. The blood is usually drawn from a vein on the inside of the elbow or the back of the hand. Drink plenty of water before your appointment. If you experience any symptoms that you are concerned about are out of the ordinary, call your doctor immediately.

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