The brief
- Shield is the first FDA-approved blood test for colorectal cancer screening, with 83% sensitivity.
- Q2 2026: 66k tests, $52.9M revenue, 2026 guidance $218-230M.
- American Cancer Society, UnitedHealth (40M members), and Medicare cover Shield.
Technical approach
Liquid biopsy
Shield isolates cancer DNA from blood and looks for methylation patterns. Avoids colonoscopy's pain and prep.
Post-treatment monitoring
Reveal detects tumor DNA after surgery or chemo to spot recurrence early. >100% volume growth in 2026.
Multi-cancer DNA testing
Guardant360 detects circulating tumor DNA across cancers for treatment selection.

