What does high INR and APTT mean in blood test?

High INR and APTT can be caused by numerous problems.

High levels of INR and APTT in the blood indicate a variety of health problems. If your blood INR level is between 0.9 ratio to 1.2 ratio and the APTT level is between 22 ratio to 35 seconds, then your body does not have any underlying health problems. But if INR and APTT levels exceed these levels, you should see a doctor immediately.

Normal INR range : 0.9 - 1.2 ratio

Age-wise ideal INR level in blood:
Age Ideal INR value
<5 years 0.977
5-10 years 1.061
10-15 years 1.152
15-20 years 1.143
20-25 years 1.134
25-30 years 1.126
30-35 years 1.118
35-40 years 1.11
40-45 years 1.101
45-50 years 1.196
50-55 years 1.187
55-60 years 1.178
60-70 years 1.169
70-80 years 1.161
80-90 years 1.153
90-100 years 1.144
>100 years 1.135

If you want your blood test report to be interpreted by INR specialist, then you can upload your report. Our INR 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 INR result may be wrong. Click to know the reason in detail

Click here to know Symptoms of High INR

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 23.892
5-10 years 25.947
10-15 years 28.178
15-20 years 30.601
20-25 years 33.233
25-30 years 32.987
30-35 years 32.743
35-40 years 32.501
40-45 years 32.261
45-50 years 32.022
50-55 years 34.776
55-60 years 34.519
60-70 years 34.264
70-80 years 34.011
80-90 years 33.76
90-100 years 33.51
>100 years 33.262

Click here to know Symptoms of High INR

Click here to know Symptoms of High APTT

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Click here to consult a doctor for your Low INR problem

High INR 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 1.2 ratio for INR 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 INR and APTT test. In most hospitals INR 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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Click here to consult a doctor for your Low INR problem

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