This sounds to good to be true --
HealthDay (4/29, Edelson) is reporting that according to reasearchers at an American Heart Association meeting "a urine test to detect coronary artery disease has worked well in a small trial." One researcher explained that "the test looks for fragments of the protein collagen, which plays a major role in blocking heart arteries." According to the researchers, "when the results were compared to coronary angiography...the urine tests were found to be 84 percent accurate."
More research is clearly needed but it sounds promising