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Liquid Biopsy

Blood-based tests that detect circulating tumor DNA (ctDNA), circulating tumor cells, or other biomarkers to diagnose cancer, guide treatment selection, and monitor response — without invasive tissue biopsies.

Key Companies

Guardant HealthFoundation MedicineGRAIL (Illumina)TempusNatera

Recent Signals

REGULATORY

FDA Approves Guardant360 as Companion Diagnostic for BRAF-Mutant CRC

Guardant Health's liquid biopsy test wins CDx approval for encorafenib in BRAF V600E-mutant metastatic colorectal cancer, expanding the utility of blood-based genomic profiling across cancer types.

Apr 13, 2026 · 4 min read