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Guardant Health, based in Redwood City, California, provides cancer blood tests and analytics for clinical and research use, and the firm maintains research partnerships with large biopharmaceutical companies. The company offers Guardant 360, a blood-based (liquid biopsy) test for treatment selection in advanced stage cancer, and Guardant Omni, a broader gene panel for immuno-oncology research. The company's pipeline includes Guardant Reveal (formerly Lunar-1), for cancer recurrence detection in survivors, and Lunar-2, a liquid biopsy for early detection of cancer in higher-risk individuals, with an initial focus on colorectal cancer. Additionally, Guardant offers research development services. The United States accounts for 90% of total revenue, and other markets the remaining 10%.