Southern Arizona Celiac Support holds an event featuring gluten-free food, a silent auction, raffles, door prizes, games and cookie-decorating from 9 a.m. to 1 p.m., Saturday, April 24. Free. Free celiac-disease screenings will also be available for ages 18 and older. Pre-registration is required for the screenings. Visit www.southernarizonaceliacsupport.org to register for a screening. Call 744-3862 or 971-9595 for more information.