Guardant Health, Inc. is a precision oncology company that develops and commercializes blood tests for early cancer detection and treatment. The company's flagship product, Guardant360, is a liquid biopsy test that analyzes cancer-related genes in the blood to help doctors make more informed treatment decisions. Guardant Health was founded in 2012 and is headquartered in Redwood City, California. The company has partnerships with several pharmaceutical companies and has received FDA approval for several of its products.