Take the Galleri multi-cancer early detection test at Flourish Marin. It’s a simple lab draw at our office and you receive results within 3-4 weeks. The Galleri test is available by prescription only. If your provider determines the test is right for you, you can take the test at our upcoming event. The Galleri test screens for many of the deadliest cancers before they become symptomatic, including cancers with no recommended screening tests today.