Activated Partial Thromboplastin Time - (APTT/PTTK) Citrated Plasma

Activated Partial Thromboplastin Time - (APTT/PTTK) Citrated Plasma


Partial thromboplastin time(PTT) is a blood test that measures the time it takes your blood to clot. A PTT test can be used to check for bleeding problems.

This Test Includes



Test Instructions

Total parameters available: 2

Parameter Names:

  • APTT
  • Control Value

Test Instructions/Precautions:

  • Alcohol: Please abstain from alcohol before the test
  • Medication :Any pre-existing medication should only be stopped after consultation with the referring Physician
  • Fluids Allowed : Water only


Soft Copy (Portal/Email) : If the sample is collected before 12 noon then the report will get delivered as per Reporting Time / Maximum TAT (Turn Around Time) indicated with the test. For samples collected after 12 Noon, 12 hours may be added to the Report Turn Around TimeHard Copy : Delivered at home upon request. A small convenience fee may apply.

Why it is Done

As part of an investigation of a possible bleeding disorder or blood clot (thrombotic episode); to monitor unfractionated (standard) heparin anticoagulant therapy; as part of screening before surgery or other invasive procedure.

What is this test

The Partial Thromboplastin Time (PTT) is a screening test that helps evaluate a person's ability to appropriately form blood clots. It measures the number of seconds it takes for a clot to form in a person's sample of blood after substances (reagents) are added. The PTT assesses the amount and the function of certain proteins called coagulation factors that are an important part of blood clot formation.