SHC vs GH Comparison

Sotera Health Co provides sterilization, analytical lab testing, and advisory services to help ensure that medical, pharmaceutical and food products are safe for healthcare practitioners, patients, and consumers. The company operates in three segments: Sterigenics, Nordion, and Nelson Labs. Sterigenics provides outsourced terminal sterilization and irradiation services for medical device, pharmaceutical, food safety, and applications; Nordion provides Co-60 and gamma irradiators, which are the key components to the gamma sterilization process; and Nelson Labs provides outsourced microbiological and analytical chemistry testing for the medical device and pharmaceutical industries. Its geographical segments are the United States, Canada, Europe and other regions.

Guardant Health, based in Redwood City, California, is a leader in liquid-based cancer tests for clinical and research use. The company offers Guardant360 LDT, a liquid biopsy test for treatment selection in advanced-stage cancer, Guardant360 CDx, an FDA-approved companion diagnostic for several targeted therapies, and Guardant Omni, a broader gene panel for immuno-oncology research. In 2021, Guardant launched Reveal, a tumor-agnostic molecular residual disease test. In 2024, the company received US FDA approval for Shield, a liquid biopsy for colorectal cancer screening. Additionally, Guardant offers research development services such as regulatory approval consultancy and clinical trial referrals.