How Liquid Biopsies Are Used in Cancer Treatment Selection

Biomarker testing is an essential tool when choosing the right treatment for many advanced solid cancers. However, tissue-based testing may take weeks to get results with a chance that not enough tissue was collected to complete the entire biomarker panel. Blood draw–based liquid biopsies may be a useful alternative to identify a tumor’s biomarker details and can be performed by testing for circulating tumor DNA (ctDNA).