What causes high APTT and low WBC?

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

If your APTT is in between 22 seconds and 35 seconds and your WBC is in between 4 thou/uL and 11 thou/uL then you need not worry as these are the normal ranges for APTT and WBC 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	22.374
5-10 years	22.755
10-15 years	23.142
15-20 years	23.536
20-25 years	23.937
25-30 years	24.344
30-35 years	24.758
35-40 years	25.179
40-45 years	25.608
45-50 years	26.044
50-55 years	26.487
55-60 years	26.938
60-70 years	27.396
70-80 years	27.862
80-90 years	28.336
90-100 years	28.818
>100 years	29.308

*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 WBC : 4 - 11 thou/uL

Ideal values of WBC depending on age :

Age	Ideal WBC value
<5 years	4.068
5-10 years	4.137
10-15 years	4.207
15-20 years	4.279
20-25 years	4.352
25-30 years	4.426
30-35 years	4.501
35-40 years	4.578
40-45 years	4.656
45-50 years	4.735
50-55 years	4.816
55-60 years	4.898
60-70 years	4.981
70-80 years	5.066
80-90 years	5.152
90-100 years	5.24
>100 years	5.329

High APTT and low WBC can be caused by a lot of reasons. If you take APTT and WBC blood tests and the results are higher than 35 seconds for APTT and lower than 4 thou/uL for WBC, 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 WBC Tests Are Done :

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