What causes high APTT and low Alkaline phosphatase?

High APTT and low Alkaline phosphatase can be caused by many reasons.

If your APTT is in between 22 seconds and 35 seconds and your Alkaline phosphatase is in between 30 U/L and 120 U/L then you need not worry as these are the normal ranges for APTT and Alkaline phosphatase 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	22.38
5-10 years	22.767
10-15 years	23.16
15-20 years	23.56
20-25 years	23.967
25-30 years	24.381
30-35 years	24.802
35-40 years	25.231
40-45 years	25.667
45-50 years	26.111
50-55 years	26.562
55-60 years	27.021
60-70 years	27.488
70-80 years	27.963
80-90 years	28.446
90-100 years	28.938
>100 years	29.438

*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 Alkaline phosphatase : 30 - 120 U/L

Ideal values of Alkaline phosphatase depending on age :

Age	Ideal Alkaline phosphatase value
<5 years	30.518
5-10 years	31.045
10-15 years	31.581
15-20 years	32.127
20-25 years	32.682
25-30 years	33.247
30-35 years	33.822
35-40 years	34.406
40-45 years	35.001
45-50 years	35.606
50-55 years	36.221
55-60 years	36.847
60-70 years	37.484
70-80 years	38.132
80-90 years	38.791
90-100 years	39.461
>100 years	40.143

High APTT and low Alkaline phosphatase can be caused by a lot of reasons. If you take APTT and Alkaline phosphatase blood tests and the results are higher than 35 seconds for APTT and lower than 30 U/L for Alkaline phosphatase, 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 Alkaline phosphatase Tests Are Done :

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