Prothrombin Time with INR Test
Your blood's ability to clot is essential for preventing excessive bleeding while maintaining healthy circulation. The ICare Prothrombin Time (PT) with International Normalized Ratio (INR) Test measures how long it takes your blood to clot and provides a standardized INR value that helps evaluate clotting function and monitor certain blood-thinning medications.
Whether you're monitoring anticoagulant therapy, preparing for a medical procedure, or evaluating a bleeding disorder, the ICare PT with INR Test delivers accurate results to help guide your healthcare decisions.
With ICare's concierge mobile laboratory services, professional coagulation testing is delivered directly to your home, office, or preferred location. *This important laboratory test is commonly used to monitor individuals taking warfarin (Coumadin®), evaluate unexplained bleeding or bruising, assess liver function, and identify conditions that affect normal blood clotting.
What Does This Test Measure?
The Prothrombin Time (PT) with INR Test evaluates how efficiently your blood forms a clot.
Prothrombin Time (PT)
Prothrombin Time measures the number of seconds it takes for your blood to clot through one of the body's primary clotting pathways.
A prolonged PT may occur with:
Blood-thinning medications
Liver disease
Vitamin K deficiency
Certain inherited clotting disorders
Deficiencies of clotting factors
International Normalized Ratio (INR)
The International Normalized Ratio (INR) standardizes PT results, allowing healthcare providers to compare results consistently between different laboratories.
INR is most commonly used to:
Monitor warfarin therapy
Adjust anticoagulant medication doses
Reduce the risk of excessive bleeding or blood clots
Evaluate clotting status before certain medical procedures
The appropriate INR range varies depending on the reason for anticoagulation and your individual medical condition.
Who Should Consider This Test?
The Prothrombin Time (PT) with INR Test may be recommended for individuals who:
Take warfarin (Coumadin®)
Have a history of blood clots
Have unexplained bleeding or frequent bruising
Experience prolonged bleeding after injuries
Have liver disease
Have suspected clotting disorders
Are preparing for surgery or invasive procedures
Have vitamin K deficiency or conditions affecting vitamin K absorption
Require routine coagulation monitoring
Your healthcare provider may also order this test as part of a broader evaluation of your bleeding or clotting health.
Why Is It Important?
Results help your healthcare provider assess your health, support diagnosis, monitor treatment, and guide personalized care.
Preparation
No special preparation is required.
Turnaround
1-3 Business Days
Sample Type
Blood
What's Included
Physician Order
We provide the necessary doctor's order for this test.
Lab Fees
All laboratory processing fees are included in the price.
Digital Results
Secure, easy-to-read results delivered to your portal.
Important Information
How It Works
Book Online
Choose your test and checkout securely. We'll generate the order.
We Come to You
Schedule a mobile phlebotomist to visit your home or office.
Get Results
Receive your physician-reviewed results online in days.