Can a blood test identify cancer?

What if our blood could help us detect cancer earlier than ever before? In this episode, we’re exploring liquid biopsies, cutting-edge blood tests that can pick up the smallest signs of cancer swirling through the blood. We sit down with Professor Nitzan Rosenfeld, Director of Barts Cancer Institute and a pioneer in the field. Professor Rosenfeld explains how fragments of tumour DNA enter our blood from cancer cells, what they can tell us about cancer, and how liquid biopsies can use blood samples to transform early detection, screening and treatment. Don't forget to like,

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Can a blood test identify cancer? is an episode from Cancer Research UK.

This episode is 48:41 long.

This episode was published on Feb 19, 2026.

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