Contact Us

National Blood Clot Alliance
PO Box 825687
Philadelphia, PA 19182-5687

Email: info@stoptheclot.org
Phone: 703.935.8845
Toll Free: 877.4.NO.CLOT

More Ways to Contact the National Blood Clot Alliance

Sign up for NBCA’s mailing list to receive news and updates concerning prevention, treatment, education and advocacy about blood clots and clotting disorders. Find out about NBCA-sponsored events and volunteer opportunities.

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Current News

National Blood Clot Alliance: 2024 Impact Highlights

As we reflect on 2024, we are proud to share the incredible strides we’ve made together in raising awareness, advancing…

NBCA Launches Season 2 of Taking a Breath: A Stop the Clot Podcast

The National Blood Clot Alliance (NBCA) is thrilled to launch Season Two of Taking a Breath: A Stop the Clot…