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Partial Thromboplastin Time, Activated aPTT Blood Test


* This is not a home test kit. You will need to visit a local lab for testing.


This test is used as a starting point for investigating excessive bleeding and clotting disorders. It is also used to monitor heparin anticoagulant therapy and to distinguish if the right doses of heparin are being used. Also, this test is also used before surgeries to asses risk of excessive bleeding.

The aPTT test measures how well your body’s blood clotting process is working. Each factor in the clotting process must be working properly and be present in the right amount.  If there is not enough of one or more factors, or if the factors are not working properly, excessive bleeding or clotting may occur.

Recommended For:

Monitoring treatment with heparin; Diagnosing coagulation factor deficiency; Assessing severity of liver disease.

Special Notes:

Blood specimen to be collected 1 hour before next heparin dose if treatment is ongoing. Specimen to be collected from arm not having heparin lock/catheter.

Tests Included:

Partial Thromboplastin Time, Activated aPTT (763)
Partial Thromboplastin Time, Activated aPTT (005207)

Estimated Turn Around For Results:

2-10 Business Days

For an exact turnaround time for results, please contact us at Personalabs and we will contact the lab on your behalf as turnaround times vary depending on testing location or lab testing provider.

  • Step 1

    Step 1 - Order Your Test

    Choose your tests, checkout securely, generate your lab order.

  • Step 1

    Step 2 - Visit The Lab

    Find a location in your area. Print and present your Doctor’s order at the lab.

  • Step 1

    Step 3 - Get Your Results

    In most cases your lab results are available in your confidential Personalabs account in 24-48 hours.


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80% on meds!

We now offer pharmacy discounts through our PersonalabsRx platform.

We now offer pharmacy discounts through our PersonalabsRx platform.

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