> ke MRIs and CT scans that only detect lumps, to blood tests that detect CANCER. You mean like the PSA test? It's pretty bad, in the scale of these things.

> ke MRIs and CT scans that only detect lumps, to blood tests that detect CANCER. You mean like the PSA test? It's pretty bad, in the scale of these things. It's used because there isn't a better screen, not because it is more specific.