Blood is just teeming with proteins. However, it’s not easy to identify specialized tumor markers indicating the presence of cancer. A new method now enables diagnostics to be carried out in a single step, using a blood test. Tumor markers in the blood help determine whether the patient is afflicted with a malign tumor and whether it is excreting markers more vigorously — involving highly specific proteins. An increased concentration in the blood provides one indication of the disease for physicians.