What causes high APTT and low Bilirubin indirect?

high APTT

High APTT and low Bilirubin indirect can be caused by many reasons.

If your APTT is in between 22 seconds and 35 seconds and your Bilirubin indirect is in between 0.1 mg/dL and 1 mg/dL then you need not worry as these are the normal ranges for APTT and Bilirubin indirect respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

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Normal range of APTT : 22 - 35 seconds

Ideal values of APTT depending on age :
Age Ideal APTT value
<5 years 22.379
5-10 years 22.764
10-15 years 23.156
15-20 years 23.555
20-25 years 23.96
25-30 years 24.372
30-35 years 24.791
35-40 years 25.218
40-45 years 25.652
45-50 years 26.093
50-55 years 26.542
55-60 years 26.999
60-70 years 27.464
70-80 years 27.937
80-90 years 28.418
90-100 years 28.907
>100 years 29.404

*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

1,37,160

Total number of patients treated

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 Bilirubin indirect : 0.1 - 1 mg/dL

Ideal values of Bilirubin indirect depending on age :
Age Ideal Bilirubin indirect value
<5 years 0.10172
5-10 years 0.10347
10-15 years 0.10525
15-20 years 0.10706
20-25 years 0.1089
25-30 years 0.11077
30-35 years 0.11268
35-40 years 0.11462
40-45 years 0.11659
45-50 years 0.1186
50-55 years 0.12064
55-60 years 0.12272
60-70 years 0.12483
70-80 years 0.12698
80-90 years 0.12917
90-100 years 0.13139
>100 years 0.13365

High APTT and low Bilirubin indirect can be caused by a lot of reasons. If you take APTT and Bilirubin indirect blood tests and the results are higher than 35 seconds for APTT and lower than 0.1 mg/dL for Bilirubin indirect, 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 Bilirubin indirect Tests Are Done :

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

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Dr. Dwayne Michaels
Guest Author
medchunk-doctor
Dr. Dwayne Michaels
Guest Author
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