What causes high APTT and low MCH?

High APTT and low MCH can be caused by many reasons.

If your APTT is in between 22 seconds and 35 seconds and your MCH is in between 27 pg and 32 pg then you need not worry as these are the normal ranges for APTT and MCH 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	22.375
5-10 years	22.757
10-15 years	23.145
15-20 years	23.54
20-25 years	23.942
25-30 years	24.35
30-35 years	24.765
35-40 years	25.187
40-45 years	25.617
45-50 years	26.054
50-55 years	26.498
55-60 years	26.95
60-70 years	27.41
70-80 years	27.878
80-90 years	28.354
90-100 years	28.838
>100 years	29.33

*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 MCH : 27 - 32 pg

Ideal values of MCH depending on age :

Age	Ideal MCH value
<5 years	27.461
5-10 years	27.929
10-15 years	28.405
15-20 years	28.89
20-25 years	29.383
25-30 years	29.884
30-35 years	30.394
35-40 years	30.913
40-45 years	31.44
45-50 years	31.976
50-55 years	31.967
55-60 years	31.957
60-70 years	31.948
70-80 years	31.939
80-90 years	31.93
90-100 years	31.921
>100 years	31.912

High APTT and low MCH can be caused by a lot of reasons. If you take APTT and MCH blood tests and the results are higher than 35 seconds for APTT and lower than 27 pg for MCH, 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 MCH Tests Are Done :

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