Member Organizations

THSNA seeks to empower and support the individual missions of its member organizations. These organizations include:

American Thrombosis & Hemostasis Network (ATHN) provides stewardship of a secure national database, adherent to all privacy guidelines, which will be used to support clinical outcomes analysis, research, advocacy and public health reporting in the hemostasis and thrombosis community. ATHN Affiliates include over 125 hemophilia and thrombosis centers across the U.S.

Anticoagulation Forum (ACF) is a multidisciplinary organization of healthcare professionals that works to improve the quality of care for patients taking antithrombotic medications. The AC Forum has over 5,000 physician, nurse, and pharmacist members representing over 1,500 anticoagulation clinics.

Association of Hemophilia Clinic Directors of Canada (AHCDC) is an organization of Hemophilia Clinic Directors from across Canada with a common interest in improving the treatment of people with hemophilia. The organization has a registry of individuals with hereditary bleeding disorders.

Canadian Pediatric Thrombosis and Hemostasis Network (CPTHN) is a group of healthcare professionals dedicated to improving the lives of children and families dealing with inherited and acquired bleeding and clotting disorders.

The Hemophilia Alliance is a not-for-profit organization that currently comprises 95 Hemophilia Treatment Centers. The purpose of the Alliance is to assist its members in providing outstanding care for their patients.

The Hemostasis and Thrombosis Research Society (HTRS) is dedicated to advancing care for people with bleeding and thrombotic disorders through investigator-initiated research, mentoring, and continuing medical education. Members include pediatric and adult physicians, allied health professionals, and industry representatives, including many of the directors of hemostasis and thrombosis treatment centers in the United States and Canada.

The International Society for Laboratory Hematology (ISLH), founded in 1992, is a growing international group of laboratory hematology professionals serving as a forum for the dissemination of new ideas and information in all the disciplines within laboratory hematology. The membership represents individuals from over 75 countries and 6 continents. Educational initiatives include monthly webinars, e-learning courses, interactive cases, and an updated guideline inventory. The society organizes an annual meeting, alternating between North America, Europe, and Asia/Australia, which includes an educational workshop, state of the art lectures, and short oral/ poster presentations.

National Blood Clot Alliance (NBCA) is a patient-led, voluntary health organization. Its goal is to eliminate deaths due and reduce pain and suffering caused by preventable blood clots. NBCA is advised by its Medical And Scientific Advisory Board which includes many of the nation's foremost experts on blood clots and blood clotting disorders.

National Bleeding Disorders Foundation (NBDF) is dedicated to finding cures for inheritable blood disorders and to addressing and preventing the complications of these disorders through research, education, and advocacy enabling people and families to thrive. Founded in 1948, NBDF support a network of over 50 chapters across the country and serves people across the US with all bleeding disorders, including hemophilia, von Willebrand disease, rare factor deficiencies, and platelet disorders. NBDF provides education and support to countless families with bleeding disorders, seeks to find resources for undiagnosed women with bleeding disorders, and works tirelessly to protect access to healthcare on the state and local level. Since 1972, NBDF has given more than 22 million dollars to bleeding disorders research.

North American Specialized Coagulation Laboratory Association (NASCOLA) provides external quality assessment for tests used to diagnose bleeding or prothrombotic disorders, thereby promoting high standards of performance and practice for specialized coagulation laboratories in the USA, Canada, and Mexico, and in countries in Central America and the Caribbean.

As the premier patient advocacy organization in North America for people living with immune thrombocytopenia (ITP) and other platelet disorders, the Platelet Disorder Support Association (PDSA) stands as a powerful force in serving and unifying the global ITP community of patients, caregivers, clinicians, and researchers through focused efforts in education, advocacy, research, and support. PDSA is home to an active ITP patient support group program with 62 locations in the US and Canada, and is a founding member of the International ITP Alliance, a worldwide consortium of 32 ITP patient associations in 29 countries. PDSA’s commitment to ITP research includes funding or authorship of original patient-centered studies and publications and the administration of the one-and-only ITP Natural History Study Patient Registry.

The Mexican Society of Thrombosis and Hemostasis / Sociedad Mexicana de Trombosis y Hemostasia (SOMETH) is a recently founded multidisciplinary society created with the goal of reducing the thrombotic disease burden in the country. We are seeking to become active members of THSNA. We believe that working together with other North American societies will be highly beneficial for attaining our goal.

Thrombosis Canada (TC) is dedicated to furthering education and research in the prevention and treatment of thrombosis. The group consists of Canadian health care professionals from medicine, pharmacy, nursing and laboratory technology whose primary interest is investigation and management of arterial and venous thrombosis as well as related issues.





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General Assistance: [email protected]
Thrombosis and Hemostasis Societies of North America (THSNA)
2111 Chestnut Avenue Ste 145
Glenview, IL 60025 USA