What does high APTT and RDW SD mean in blood test?

High APTT and RDW SD can be caused by numerous problems.

High levels of APTT and RDW SD in the blood indicate a variety of health problems. If your blood APTT level is between 22 seconds to 35 seconds and the RDW SD level is between 39 seconds to 46 fL, then your body does not have any underlying health problems. But if APTT and RDW SD levels exceed these levels, you should see a doctor immediately.

Normal APTT range : 22 - 35 seconds

Age-wise ideal APTT level in blood:

Age	Ideal APTT value
<5 years	22.411
5-10 years	22.83
10-15 years	23.257
15-20 years	23.692
20-25 years	24.135
25-30 years	24.586
30-35 years	25.046
35-40 years	25.514
40-45 years	25.991
45-50 years	26.477
50-55 years	26.972
55-60 years	27.476
60-70 years	27.99
70-80 years	28.513
80-90 years	29.046
90-100 years	29.589
>100 years	30.142

*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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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 RDW SD range : 39 - 46 fL

Age-wise ideal RDW SD level in blood:

Age	Ideal RDW SD value
<5 years	39.729
5-10 years	40.472
10-15 years	41.229
15-20 years	42
20-25 years	42.785
25-30 years	43.585
30-35 years	44.4
35-40 years	45.23
40-45 years	45.214
45-50 years	45.199
50-55 years	45.183
55-60 years	45.167
60-70 years	45.152
70-80 years	45.996
80-90 years	45.98
90-100 years	45.964
>100 years	45.948

High APTT and RDW SD levels in the blood can cause a number of health problems. Your GP may recommend follow-up tests to get an important picture of your overall health and well-being. If the results are greater than 35 seconds for APTT and more than 46 fL for RDW SD, you may also need some follow-up tests that will help detect the underlying disease early.

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How is a blood test performed in the lab?

Depending on the symptoms you are experiencing, your doctor may order a APTT and RDW SD test. In most hospitals APTT and RDW SD results can be obtained within three to six hours after blood is taken. The blood is usually drawn from a vein on the inside of the elbow or the back of the hand. Drink plenty of water before your appointment. If you experience any symptoms that you are concerned about are out of the ordinary, call your doctor immediately.