What causes high APTT and low Plateletcrit?

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

If your APTT is in between 22 seconds and 35 seconds and your Plateletcrit is in between 0.2 % and 0.39 % then you need not worry as these are the normal ranges for APTT and Plateletcrit 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	22.389
5-10 years	22.784
10-15 years	23.186
15-20 years	23.595
20-25 years	24.012
25-30 years	24.436
30-35 years	24.868
35-40 years	25.307
40-45 years	25.754
45-50 years	26.209
50-55 years	26.672
55-60 years	27.143
60-70 years	27.622
70-80 years	28.11
80-90 years	28.606
90-100 years	29.111
>100 years	29.625

*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 Plateletcrit : 0.2 - 0.39 %

Ideal values of Plateletcrit depending on age :

Age	Ideal Plateletcrit value
<5 years	0.204
5-10 years	0.208
10-15 years	0.212
15-20 years	0.216
20-25 years	0.22
25-30 years	0.224
30-35 years	0.228
35-40 years	0.232
40-45 years	0.236
45-50 years	0.24
50-55 years	0.244
55-60 years	0.248
60-70 years	0.252
70-80 years	0.256
80-90 years	0.261
90-100 years	0.266
>100 years	0.271

High APTT and low Plateletcrit can be caused by a lot of reasons. If you take APTT and Plateletcrit blood tests and the results are higher than 35 seconds for APTT and lower than 0.2 % for Plateletcrit, 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 Plateletcrit Tests Are Done :

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