What causes high Hematocrit and low APTT?

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

If your Hematocrit is in between 40 % and 50 % and your APTT is in between 22 seconds and 35 seconds then you need not worry as these are the normal ranges for Hematocrit and APTT respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

Some examples of conditions that can increase or decrease Hematocrit levels include:

• Damage to the bone marrow
• Kidney failure
• Excessive destruction of red blood cells
• Chronic inflammatory diseases
• Congenital heart disease

Hematocrit treatment - Click to read 10 GOLDEN ARTICLES on Anemia

Normal range of Hematocrit : 40 - 50 %

Ideal values of Hematocrit depending on age :

Age	Ideal Hematocrit value
<5 years	40.92
5-10 years	41.861
10-15 years	42.824
15-20 years	43.809
20-25 years	44.817
25-30 years	45.848
30-35 years	46.903
35-40 years	47.982
40-45 years	49.086
45-50 years	49.06
50-55 years	49.034
55-60 years	49.008
60-70 years	48.982
70-80 years	48.956
80-90 years	48.93
90-100 years	48.904
>100 years	48.878

*Ideal values are calculated based on our database of patient records

Normal range of APTT : 22 - 35 seconds

Ideal values of APTT depending on age :

Age	Ideal APTT value
<5 years	22.506
5-10 years	23.024
10-15 years	23.554
15-20 years	24.096
20-25 years	24.65
25-30 years	25.217
30-35 years	25.797
35-40 years	26.39
40-45 years	26.997
45-50 years	27.618
50-55 years	28.253
55-60 years	28.903
60-70 years	29.568
70-80 years	30.248
80-90 years	30.944
90-100 years	31.656
>100 years	32.384

High Hematocrit and low APTT can be caused by a lot of reasons. If you take Hematocrit and APTT blood tests and the results are higher than 50 % for Hematocrit and lower than 22 seconds for APTT, 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 Hematocrit and APTT Tests Are Done :

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

Medical References

• Cleveland Clinic – Hematocrit Test: What It Is, Levels, and High & Low Range
• Mayo Clinic – Hematocrit test
• MedlinePlus – Hematocrit Test