Michael Hubank, PhD, The Royal Marsden NHS Foundation Trust, London, UK, discusses the benefits of liquid biopsy for patients. Advances in this field mean that roughly 60-75% of liquid biopsies give a reliable diagnosis, without the need for further tissue biopsy. The main advantages are that liquid biopsies are often faster, cheaper, and less invasive than tissue biopsies, which makes them a more attractive option for patients and care providers alike.