News Health & Medicine Detecting cancer risk with a chip By Nathan Seppa October 9, 2001 at 12:17 pm - More than 2 years ago Share this:Share Share via email (Opens in new window) Email Click to share on Facebook (Opens in new window) Facebook Click to share on Reddit (Opens in new window) Reddit Click to share on X (Opens in new window) X Click to print (Opens in new window) Print Scientists adept at making microscopic machinery have devised a diagnostic technique that may alert physicians to signs of prostate cancer more effectively and inexpensively than current tests do. Physicians screen men for prostate cancer risk by looking for elevated blood concentrations of a protein called prostate specific antigen, or PSA.