A newly developed urine test may help to screen for prostate cancer. The test uses a new technology called polymerase chain reactions (PCR) to check urine samples for hypermethylation at a gene known as glutathione-S-transferase, since it has been found to be present in more than 90% of prostate cancers. Urine tests are already in use for screening for bladder and kidney cancer. Journal of the AMA April 26, 2000 JNCi, 10/02 JNCI, 5/03 Remember we are NOT Doctors and have NO medical training. This site is like an Encylopedia - there are many pages, many links on many topics. Support our work with any size DONATION - see left side of any page - for how to donate. You can help raise awareness of CAM.