Email this page To: From: Subject: Message: Stimate / DDAVP challenge - Learn the facts about DDAVP, a medicine used to help stop bleeding. We do a Stimate®/DDAVP challenge to make sure the medicine will help your child. - https://www.stjude.org/treatment/patient-resources/caregiver-resources/patient-family-education-sheets/hematology/stimate-challenge.html A summary of this page will be sent along with your message I am a referring physician Yes, I would like to receive email updates. Send Email Your message has been emailed successfully. Thank you for your interest in St. Jude Children's Research Hospital.