New liquid biopsy tests hold promise to prevent most cancer deaths with a simple, inexpensive blood draw. [This article first appeared on LongevityFacts. Author: Brady Hartman. ] A simple blood test that tells if you have a tumor and where it is in your body is a lot closer to reality and may cost only $500. Johns Hopkins University (JHU) just announced a test … Continue reading New Liquid Biopsy Tests Aim to Prevent Cancer Mortality