Know it. Spot it. Act fast.
Most blood clots are preventable, and the early signs are easy to miss. Two minutes here could make the difference.
What is thrombosis
A blood clot that forms inside a vein or artery and blocks the flow of blood.
- DVT
- Deep vein thrombosisA clot in a deep vein, usually in the calf or thigh.
- PE
- Pulmonary embolismPart of a clot breaks off and blocks an artery in the lungs. A medical emergency.
- AT
- Arterial thrombosisA clot in an artery, the cause of most heart attacks and strokes.
Check your risk
What applies to you?
Tap every factor that fits. Nothing is saved.
Start by tapping a factor.An awareness tool, not a diagnosis.
Legs, where most clots start
Warning signs
Where is the clot?
!Swelling or pain in one leg? See a doctor today.
World Thrombosis Day Webinar · ISTH, supported by Sysmex
Managing Thrombotic Risk in Pregnancy: How the lab may help
Pregnancy changes how the body manages clotting risk, and understanding that shift starts in the lab. This free webinar examines how thrombotic risk is managed before, during and after pregnancy from three angles: diagnosis, treatment and research.
- Andreas Rechner, Ph.D.Diagnosis
- Jim Douketis, M.D.Treatment · Chair, World Thrombosis Day campaign
- Prof. Beverley HuntResearch · Former chair, World Thrombosis Day
- Organiser
- International Society on Thrombosis and Haemostasis (ISTH)
- Partner
- Sysmex
- Format
- Free online webinar
- Early access
- Preregister by 6 October
- For
- Thrombosis professionals, OB-GYNs, lab technicians and researchers
World Thrombosis Day is 13 October. The ISTH sends the viewing link to registered attendees.
WTD Run, Indirapuram
A community run and walk to get people moving and talking about blood clots. All ages and paces welcome.
- Date
- Sunday, 11 October 2026
- Reporting
- EDIT: 6:00 am, flag-off 6:30 am
- Start
- EDIT: Start point, Indirapuram, Ghaziabad
- Entry
- EDIT: Free
Indirapuram
Take the pledge, wear the badge
I will learn the signs of blood clots, know my risk, keep moving, follow my doctor's advice, and share what I know.
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The pledge wall
Badges people made on this page
No badges yet. Make yours and be the first on the wall.
This year's moments
Photos from the run, the webinar and awareness drives with our partner labs.
Photos from the Indirapuram run and the webinar go up here after 11 October.
Campaign contact
Questions about the run, the webinar or hosting an awareness session at your lab.
- Phone
- +91 88604 66992
- EDIT: info@r2diagnostics.in
- Website
- r2diagnostics.in