The blood test, called "Cancer Seek," could run patients less than $500. (Source: CNN)(CNN) - Scientists may be getting closer to developing a new way to detect cancer in the body. An experimental blood test has the potential to locate early-stage cancer more easily. In trials, non-invasive tests found the presence of multiple common tumors, including in the ovary, liver, stomach, pancreas, lung and breast. The findings were published in the journal "Science."