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About Clots
Know Your Risk for Blood Clots
General Risk Assessment Tool
Women's Risk Assessment Tool
Signs and Symptoms of Blood Clots
How is DVT diagnosed?
How is PE Diagnosed?
Prevent Blood Clots
Blood Clot Treatment
Managing Anticoagulants Before, During, and After Medical Procedures
Stop the Clot, Spread the Word®
COVID-19 and Blood Clotting
Women & Blood Clots
Women's Risk Assessment Tool
Birth Control & Family Planning
Pregnancy & Childbirth
Treatment of Menopause Symptoms
Hospitalization and Surgery
Stop the Clot, Spread the Word™ Hospitalization
Toolkit for Knee and Hip Replacement Patients
Cancer and Blood Clots
Blood Clots and Cancer: What You Need to Know
Blood Clots and Cancer: What You Need to Know (Spanish version)
Athletes and Blood Clots
Travel and Blood Clots
Thrombophilias
Understanding Thrombophilia
Genetics of Thrombophilia
Children, Teenagers & Blood Clots
Caregivers
Atrial Fibrillation (AFib) and Clot-Provoked Stroke
Clinical Trials
Glossary
Patient Resources
Your Stories
Share Your Story in Writing
Share Your Loved One’s Blood Clot Story
Resource Center
Psychological Impact of Blood Clots
Taking a Breath: A Stop the Clot Podcast
Questions to Ask Your Doctor After Having a Blood Clot
PEP Talk: Patients Educating Patients
Peer Support
New Patient Resource Guide
FAQs
Health Professionals
NBCA VTE Centers of Excellence™
Healthcare Professional Email Sign Up
Online VTE Curriculum – CE
Medical Messages
Adherence
DVT/PE Awareness Study
News
Latest News
Press Room
Newsletter
Get Involved
Blood Clot Awareness Month 2024
Events
Event Calendar
Email Sign Up
Ways to Give
DIY Fundraising
Facebook Fundraising to Help Stop the Clot®
How To Help
Become a Community Thrombassador
NBCA Interest Questionnaire
12 Steps to Planning a Blood Clot Awareness Event
Volunteer Event Proposal Form
NBCA Sports & Wellness Institute: Team Stop the Clot
Team Stop the Clot®
Volunteer Spotlight
NBCA Corporate Roundtable
Advocacy
NBCA Advocacy Institute
Advocacy Updates
Take Action Now
About Us
Board of Directors and Officers
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Taking a Breath: A Stop the Clot Podcast
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Blood Clot Diagnosis
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What fraction of people with a PE have an identifiable DVT?
What fraction of people with a PE have an identifiable DVT?
One-third to two-thirds.
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