The link to sign up: https://plateletsunc.timetap.com/ They're open 8am-8pm Mon-Thurs & 8am-2pm on Friday. UNC Hospitals is always in need of platelet donations, so this service is so important! Remember to be well hydrated and avoid aspirin 48 hours before your appointment. If you have any questions, email platelet@unchealth.unc.edu or call (984) 974-8290.