[URL]http://sacred-heart.privatehealthnews.com/html/topicdetails.asp?pid=146&topic_id=9396&puid=229336[/URL] [QUOTE] A single prostate specific antigen (PSA) test taken before the age of 50 can be used to predict advanced prostate cancer in men up to 25 years in advance of a diagnosis, according to a new study published by researchers at Memorial Sloan-Kettering Cancer Center in New York and Lund University in Sweden. [/QUOTE]
