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

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

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

1,37,160

Total number of patients treated

Some examples of conditions that increase or decrease INR levels include:

• Liver disease
• Vitamin K abnormality
• Decreased or defective factor I (fibrinogen), II (prothrombin), V or X
• Hemophilia A and hemophilia B
• Autoantibody against a specific factor (e.g., factor VIII)

If you want your blood test report to be interpreted by INR specialist, 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

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

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.