Is APTT 34 normal, high or low? What does APTT level 34 mean?

📅 Medical Review Date: December 31, 2025

Your APTT level of 34 is a Normal APTT level.

Normal 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	22.748
5-10 years	23.521
10-15 years	24.321
15-20 years	25.148
20-25 years	26.003
25-30 years	26.887
30-35 years	27.801
35-40 years	28.746
40-45 years	29.723
45-50 years	30.734
50-55 years	31.779
55-60 years	32.859
60-70 years	33.976
70-80 years	33.937
80-90 years	33.898
90-100 years	33.859
>100 years	33.82

*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 normal 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	22.77
5-10 years	23.567
10-15 years	24.392
15-20 years	25.246
20-25 years	26.13
25-30 years	27.045
30-35 years	27.992
35-40 years	28.972
40-45 years	29.987
45-50 years	31.037
50-55 years	32.124
55-60 years	33.249
60-70 years	34.413
70-80 years	34.371
80-90 years	34.329
90-100 years	34.287
>100 years	34.245

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.

Medical References

• WebMD – Activated Partial Thromboplastin Time (APTT) Test
• Cleveland Clinic – Partial Thromboplastin Time (PTT) Test
• NIH – Solutions to Establishing and Verifying Normal Reference Intervals and Assessing APTT Reagents