press release Feb 2012: Scripps invents way to spot spread of cancer | UTSanDiego.com

"The test will require FDA approval before it can move beyond clinical testing.Pathologists and oncologists already have a test, called CellSearch, that’s used to look for CTCs (circulating tumor cells). But Kuhn says physicians need a test that is far more sensitive, and thus more useful for a wide array of cancer patients."