Guardant Health

Shield blood test, colorectal cancer screening

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The brief

Analyst view
  • 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

As reported
Blood-based detection

Liquid biopsy

Shield isolates cancer DNA from blood and looks for methylation patterns. Avoids colonoscopy's pain and prep.

Residual disease

Post-treatment monitoring

Reveal detects tumor DNA after surgery or chemo to spot recurrence early. >100% volume growth in 2026.

Broad oncology

Multi-cancer DNA testing

Guardant360 detects circulating tumor DNA across cancers for treatment selection.

Primer