Cancer blood tests are everywhere. Do they really work?

Nature
by Nic Fleming
March 4, 2026
Their makers claim they can detect dozens of cancer types — but some scientists say they could be missing many cancers or delivering the wrong diagnosis. Their makers claim they can detect dozens of cancer types — but some scientists say they could be missing many cancers or delivering the wrong diagnosis.
Verticals
scienceresearch
Originally published on Nature on 3/4/2026