ACTIV4c: COVID-19 Post-hospital Thrombosis Prevention Study - Clinical Trial

What is the Purpose of this Study?

The chance of blood clots in patients who are diagnosed with COVID-19 is higher than for patients who do not have COVID-19. Clots in the arteries, veins, and heart can cause heart attacks, strokes, and blockages.

Many patients leaving the hospital after COVID-19 treatment are prescribed blood thinners. We are doing this study to compare how people do either on a blood thinner or not following a COVID-19 hospitalization.

What is the Condition Being Studied?


Who Can Participate in the Study?

Adults being discharged from a COVID-19 hospitalization

Age Group

What is Involved?

If you choose to join this study, you will:
-Have blood test if not already done in the hospital
-Be randomly assigned (a fair, 50/50 chance) Group 1 or Group 2
--Group 1 will take a blood thinner
--Group 2 will take a placebo (a pill with no medicine in it)

Study Details

Full Title
ACTIV4c: COVID-19 Thrombosis Prevention Trials: Post-hospital Thromboprophylaxis : A multicenter, adaptive, prospective, randomized trial evaluating the efficacy and safety of antithrombotic strategies in patients with COVID-19 following hospital discharge
Principal Investigator
Hospital Medicine Specialist
Protocol Number
IRB: PRO00107730
NCT: NCT04650087
Phase IV
Enrollment Status
Open for Enrollment
Contact the Duke Recruitment Innovation Center