What causes high APTT and low Direct LDL cholesterol?

High APTT and low Direct LDL cholesterol can be caused by many reasons.

If your APTT is in between 22 seconds and 35 seconds and your Direct LDL cholesterol is in between 0 mg/dL and 100 mg/dL then you need not worry as these are the normal ranges for APTT and Direct LDL cholesterol 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	22.382
5-10 years	22.771
10-15 years	23.166
15-20 years	23.568
20-25 years	23.977
25-30 years	24.393
30-35 years	24.816
35-40 years	25.247
40-45 years	25.685
45-50 years	26.131
50-55 years	26.585
55-60 years	27.047
60-70 years	27.517
70-80 years	27.995
80-90 years	28.481
90-100 years	28.975
>100 years	29.478

*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 Direct LDL cholesterol : 0 - 100 mg/dL

Ideal values of Direct LDL cholesterol depending on age :

Age	Ideal Direct LDL cholesterol value
<5 years	5.087
5-10 years	5.175
10-15 years	5.265
15-20 years	5.356
20-25 years	5.449
25-30 years	5.544
30-35 years	5.64
35-40 years	5.738
40-45 years	5.838
45-50 years	5.939
50-55 years	6.042
55-60 years	6.147
60-70 years	6.254
70-80 years	6.363
80-90 years	6.473
90-100 years	6.585
>100 years	6.699

High APTT and low Direct LDL cholesterol can be caused by a lot of reasons. If you take APTT and Direct LDL cholesterol blood tests and the results are higher than 35 seconds for APTT and lower than 0 mg/dL for Direct LDL cholesterol, 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 Direct LDL cholesterol Tests Are Done :

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