Activated Partial Thromboplastin Time (APTT) Test For Blood Clot Time

The APTT test is a blood test that checks how quickly blood clots. It helps doctors diagnose and manage bleeding disorders and ensures the right dose of blood-thinning medications like heparin.

APTT Test

Here are the basic details of the APTT Test.

*Price range may vary as per location, lab type, and procedure of lab test.

APTT Test Means

APTT Test, or Activated Partial Thromboplastin Time Test, assesses blood clotting speed to diagnose bleeding disorders and monitor heparin therapy.

• APTT Test measures intrinsic and common clotting pathways.
• It involves adding calcium and phospholipid to a plasma sample.
• Normal APTT Test range is 27.0–41.0 seconds, but it varies for heparin therapy.
• APTT Test is vital in preventing excessive bleeding during surgeries and ensuring heparin's therapeutic effect.

APTT Test Purpose

The purpose of the APTT Test is to:

• Assess blood clotting speed.
• Diagnose bleeding disorders.
• Monitor effectiveness of heparin therapy.
• Ensure proper blood clotting during surgeries.
• Identify clotting factor deficiencies or abnormalities.

APTT Test Preparation

Here is the basic preparation for the APTT Test.

Before Test

• No fasting or special dietary restrictions are typically required.
• Inform your healthcare provider about any medications or supplements you are taking.
• Wear clothing with easy access to your arm, as a blood sample is usually drawn from a vein in your arm.

During Test

• You'll be seated comfortably.
• A healthcare professional will use a needle to draw a blood sample from your arm.
• You may feel a brief pinch or sting when the needle is inserted.

After Test

• Apply pressure to the site of the needle puncture to minimize bleeding.
• You can resume normal activities unless your healthcare provider advises otherwise.
• Results will be reported to your healthcare provider for interpretation and discussion.

APTT Test Procedure

Here is the basic APTT Test Procedure.

• Blood sample drawn from your arm.
• Sample mixed with calcium and phospholipid.
• Time measured for clot formation in seconds.
• Results used to assess clotting function.

APTT Test Result

• A normal APTT result is typically ≤35 seconds, but ranges can vary.
• A typical APTT value falls between 30-40 seconds. On heparin, it's 60-80 seconds.
• Prolonged APTT suggests delayed clotting and may indicate various conditions like bleeding disorders, liver disease, or medication usage.

APTT Test Report

APTT Test Report PDF

APTT Test Normal Report

APTT Normal Test Report PDF Format

APTT Test Normal Result Report PDF

APTT Test Abnormal Report

APTT Abnormal Test Report PDF Format

APTT Test Abnormal Result Report PDF

APTT Test Normal Range

Here is the normal range of the APTT Test.

APTT Test Interpretation

Here is the Interpretation of the APTT Test.

The APTT test measures blood clotting time, with normal results typically ≤35 seconds and variations indicating potential clotting disorders or therapeutic heparin use.

APTT Test High Levels

Here are some possible causes of high APTT levels:

High APTT levels may result from various causes, including therapy, bleeding disorders, liver disease, coagulation factor issues, vitamin K deficiency, or DIC.

APTT Test Low Levels

Here are some possible causes of low APTT levels:

Low APTT levels can be caused by conditions like lupus anticoagulant, clotting factor excess, medications, technical issues, or rare congenital disorders.

Specimen Requirements For APTT Test

Here are the specimen requirements for the APTT Test.

APTT Test is Safe?

The Activated Partial Thromboplastin Time test is generally safe.

• It involves a routine blood draw, which may cause mild discomfort or bruising at the needle site.
• Risks are minimal, and complications are rare, with the benefits of diagnosis and treatment outweighing potential discomfort.

When Do You Get APTT Test Results? 

• APTT test results are typically available within a few hours to a day.
• Turnaround time may vary depending on the laboratory's workload and location.
• Healthcare providers will communicate the results and provide interpretation.

APTT Test Limitation

Here is the basic limitation of APTT Test.

• Limited by specific reagents and laboratory techniques.
• May not identify all bleeding disorders.
• Results vary with equipment and reference ranges.
• Interpretation requires clinical context.
• Not a standalone diagnostic test; used in conjunction.

APTT Test Risk Factors

Here are some of the risk factors of the APTT Test.

• Minimal risks associated with standard blood draw procedure.
• Rare complications such as infection or bleeding.
• Discomfort or bruising at the needle insertion site.
• No major health risks associated with APTT testing.
• Benefits outweigh minimal risks for diagnosis and treatment.

Doctor Recommendations After APTT Test Result

 Here are the Doctor's recommendations or consult a specialist after the APTT Test.

Visit a hematologist for high or low APTT results to assess clotting or bleeding disorders, while normal results may not require a specific doctor's visit.

APTT Test Price

Here are the estimated APTT Test Prices in India with different top cities:

*Prices are approximate and vary depending on a specific laboratory or healthcare facility.

Summary

Overall, The APTT test measures blood clotting speed, aiding in diagnosing bleeding disorders or monitoring heparin therapy for optimal health. Also check Drlogy Test for detailed information about all medical tests for patients, doctors, scholers and medical students.

Reference

• Partial thromboplastin time - Wikipedia [1].
• Diagnosis of Hemophilia - CDC [2].