PT/INR Testing

Prothrombin time (PT) and International Normalized Ratio (INR) testing are blood tests used to measure how long it takes for blood to clot. These tests are essential for evaluating clotting function and are commonly performed in patients taking anticoagulant medications like warfarin (Coumadin) to ensure the dosage is effective and safe. PT/INR testing is also used to diagnose bleeding disorders or liver problems. At Revere Health, we offer comprehensive PT/INR testing services to monitor blood clotting and help patients manage their treatment safely and effectively.

When Is PT/INR Testing Needed?
PT/INR testing is recommended for:

Monitoring Anticoagulation Therapy: For patients on blood-thinning medications like warfarin to prevent blood clots, stroke, or other clotting complications.
Diagnosing Bleeding or Clotting Disorders: Such as hemophilia or vitamin K deficiency.
Evaluating Liver Function: Since the liver produces clotting factors, PT/INR can indicate liver health.
Pre-Surgical Screening: To ensure normal clotting before invasive procedures.

How Does PT/INR Testing Work?
Blood Sample Collection: A small blood sample is taken, usually from a vein in your arm or through a fingerstick.
Prothrombin Time (PT) Measurement: The test measures how quickly prothrombin, a clotting protein produced by the liver, converts into thrombin to form a clot.
INR Calculation: The INR is a standardized calculation based on the PT result, which allows for consistent interpretation across different laboratories.

Understanding PT/INR Results
Normal PT Range: Typically 11-13.5 seconds, but this can vary depending on the laboratory.
Normal INR Range: Usually between 0.8 and 1.1 for individuals not on anticoagulants.
Therapeutic INR Range: For patients on warfarin, the target INR is generally between 2.0 and 3.0, though this can vary depending on the condition being treated.
High INR: Indicates blood is clotting more slowly than desired, increasing the risk of bleeding.
Low INR: Indicates blood is clotting too quickly, increasing the risk of blood clots.

Benefits of PT/INR Testing
Effective Monitoring: Ensures that blood-thinning therapy is working safely and efficiently.
Early Detection: Identifies potential bleeding or clotting issues before complications arise.
Personalized Care: Results help adjust medication dosage and guide treatment decisions.

Why Choose Revere Health?
Our team provides precise and timely PT/INR testing to monitor blood clotting function, ensuring you receive the appropriate care and adjustments to your treatment plan as needed.

For more information or to schedule a PT/INR test, contact Revere Health today.