Is APTT 21.7 low, normal or dangerous? What does APTT level 21.7 mean?

Your APTT level of 21.7 is a Low APTT level.

Low APTT levels may indicate underlying health problems. The normal range is typically between 22 seconds and 35 seconds. If your levels are outside this range, it's important to speak with a healthcare provider. Consulting a doctor is recommended to determine the cause and appropriate next steps.

The normal APTT range for men is :22 - 35 seconds

Ideal values of APTT depending on age (male) :

Age	Ideal APTT value
<5 years	22.477
5-10 years	22.965
10-15 years	23.463
15-20 years	23.972
20-25 years	24.492
25-30 years	25.023
30-35 years	25.566
35-40 years	26.121
40-45 years	26.688
45-50 years	27.267
50-55 years	27.859
55-60 years	28.464
60-70 years	29.082
70-80 years	29.713
80-90 years	30.358
90-100 years	31.017
>100 years	31.69

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

Get Advice via Email : Send us your blood test report, and our APTT experts will review it. You'll receive a detailed analysis and personalized treatment guidance via email within 12 hours. If you have additional blood test results besides APTT, please include those too—an accurate diagnosis often requires a full view of all abnormalities. 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

Receive world-class medical opinion about your low APTT levels over email.Upload blood test report now

Normal range of APTT found among women :22-35 seconds

Ideal values of APTT depending on age (female) :

Age	Ideal APTT value
<5 years	22.492
5-10 years	22.995
10-15 years	23.509
15-20 years	24.034
20-25 years	24.571
25-30 years	25.12
30-35 years	25.681
35-40 years	26.255
40-45 years	26.842
45-50 years	27.442
50-55 years	28.055
55-60 years	28.682
60-70 years	29.323
70-80 years	29.978
80-90 years	30.648
90-100 years	31.333
>100 years	32.033

If you take a APTT blood test and the results are not in the normal range (22-35 seconds), your physician may recommend more tests to figure out the problem. You might also get this test if your physician thinks you have some other disease.

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How the APTT Test Is Done :

When your doctor orders a APTT test, it involves a straightforward blood draw to measure your APTT levels. A pathologist or lab technician will take a small sample of blood from a vein using a needle. Your APTT test results are usually available within a few hours.