A new sensitive blood analysis can detect cancer tumors, Fox News reports in reference to Medical News Today.

Researchers at Stanford University School of Medicine attempted a new approach to detecting cancer tumors— a blood test that uses tumor DNA as a biomarker.

In a new study published in Nature Medicine, the test correctly identified around half of patients with stage 1 lung cancer and all patients with stage 2 or higher.

Researchers say the method has potential as a cancer screening tool for both healthy and at-risk populations.