Call : (045) 809 0050
Email : tarlacmed@tarlacmedicalcenter.com.ph

(045) 809 0050​

tarlacmed@tarlacmedicalcenter.com.ph

Prothrombin Time (PT) and INR Blood Test

Prothrombin Time

We offer Prothrombin Time (PT) testing at Tarlac Medical Center to evaluate how quickly your blood clots. Often performed together with the International Normalized Ratio (INR), this test plays an important role in assessing bleeding and clotting disorders, monitoring anticoagulant therapy, and supporting safe medical decisions.

Our hospital laboratory ensures accurate testing, standardized procedures, and reliable results for patients requiring clotting and coagulation studies.

What Is a Prothrombin Time Test?

A Prothrombin Time test, also known as a PT blood test or protime blood test, measures the time it takes for blood plasma to clot. It evaluates clotting factors that are essential for preventing excessive bleeding.

Doctors commonly request prothrombin time with INR to standardize results and allow accurate comparison across laboratories.

What Is INR and Why Is It Important?

The INR (International Normalized Ratio) is calculated from the prothrombin time result. It helps doctors:

  • Monitor patients on blood-thinning medications (such as warfarin)
  • Assess bleeding risk before surgery or procedures
  • Evaluate liver-related clotting function

Testing PT and INR together provides a clearer and more consistent assessment of clotting status.

Related Coagulation Tests

Depending on clinical findings, doctors may also request other blood coagulation tests, including:

These tests help physicians evaluate different parts of the clotting process.

What Do Prothrombin Time Test Results Mean?

Prothrombin time test results help doctors determine whether clotting time is:

  • Normal
  • Prolonged (elevated PT / INR) – increased bleeding risk
  • Shortened (low PT) – possible clotting tendency

An abnormal prothrombin time does not automatically mean a serious condition. Results must always be interpreted by a physician, considering medications, liver function, and overall health.

When Is a Prothrombin Time Test Recommended?

Doctors may request a PT/INR test for patients who:

  • Are taking anticoagulant medications
  • Are preparing for surgery or invasive procedures
  • Have liver disease or suspected clotting disorders
  • Experience unexplained bleeding or bruising

This test is commonly included in pre-operative and hospital admission evaluations.

Prothrombin Time Test Price

The prothrombin time test price may vary depending on whether PT alone or PT with INR and other coagulation tests are requested. For updated pricing, test packages, and PhilHealth-related inquiries, we recommend contacting our laboratory or admissions team directly.

Why Choose Tarlac Medical Center for PT/INR Testing?

  • Hospital-based, accredited laboratory
  • Standardized PT and INR testing procedures
  • Experienced medical technologists
  • Accurate and timely result reporting
  • Trusted by physicians across Tarlac and nearby areas

We follow strict laboratory standards to ensure dependable coagulation test results.

Patient Reminders

  • A doctor’s request is required for PT/INR testing
  • Inform staff of any blood-thinning medications
  • Result availability may vary depending on test combinations

Laboratory Inquiries and Coagulation Testing

For questions about Prothrombin Time (PT/INR) testing, result availability, or laboratory requirements, you may contact Tarlac Medical Center Laboratory at 09985520559 for assistance.

Frequently Asked Questions (FAQs)

What is the difference between PT and PTT?

PT measures one pathway of blood clotting, while PTT (aPTT) evaluates another. Both may be requested together for a complete coagulation assessment.

What does a high prothrombin time mean?

A high PT or INR indicates slower blood clotting, which may increase bleeding risk and requires medical evaluation.

Is there an at-home prothrombin time test?

Home testing is not recommended for diagnostic purposes. Accurate PT/INR testing should be performed in a medical laboratory.

Do I need to fast before a PT/INR test?

Fasting is usually not required unless instructed by your physician.

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