Sensitivity and specificity

Maximilian Diehn shares senior authorship of a paper describing a technique that is sensitive enough to detect just one molecule of tumor DNA in a sea of 10,000 healthy DNA molecules in the blood.
Blood test could provide rapid, accurate method of detecting solid cancers, study finds
A Simple Blood Test May Catch Early Pancreatic Cancer
Nanotech Device Mimics Dog’s Nose to Detect Explosives