Shield
FDA-approved blood test for colorectal cancer screening.
Who it's for: People eligible for colorectal cancer screening
- Blood-based screening test
- Analyses cell-free DNA from a blood sample

Precision oncology company making blood tests for cancer screening, monitoring and treatment selection.
🇺🇸 Palo Alto, California · Founded 2012 · 1,000+ people
Guardant Health is a precision oncology company based in Palo Alto, California. It provides blood and tissue tests for cancer screening, for monitoring early-stage cancer and for guiding treatment in advanced cancer. The company was founded in 2012 and is listed on Nasdaq under the ticker GH. It has offices in the United States, Singapore, Japan, China, India and Israel.
The careers page lists open positions and a talent community.
FDA-approved blood test for colorectal cancer screening.
Who it's for: People eligible for colorectal cancer screening
Liquid biopsy and tissue tests that help inform treatment decisions in advanced cancer.
Who it's for: Patients with advanced solid tumors and their doctors
Blood test that uses circulating tumor DNA to detect cancer at the molecular level.
Who it's for: Patients with early-stage or advanced cancer
Doctors order its tests for patients with early or advanced cancer and for people eligible for colorectal cancer screening.