Lab services are not currently available. We're working to bring Feelrx Labs online soon — everything below is a preview of what's coming.
Quest / Blood & Iron Markers
Prothrombin Time with INR
The Prothrombin Time (PT) test measures how long it takes your blood to clot. It helps assess the function of clotting factors made by your liver. The INR (International Normalized Ratio) is a standardized version of the PT result.
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What this lab measures
The Prothrombin Time (PT) test measures how long it takes your blood to clot. It helps assess the function of clotting factors made by your liver. The INR (International Normalized Ratio) is a standardized version of the PT result.
How testing works
Order online
Choose your marker and add a brief medical history so your result has context from the first draw.
Visit a partner lab
Take your order to a certified Quest location for a short blood draw.
Clinician review
A licensed clinician reviews your result and shares clear interpretation with next steps.
FAQ
After ordering, visit a certified Quest partner location for a short blood draw. No insurance is required.
Feelrx / Start here
Know your baseline.
Order a panel online, draw at a certified partner lab, and receive a clear clinician review.
Coming Soon