I read in Reader's Digest and a couple of other articles about the gene that causes slow metabolizing of warfarin. Does anyone (maybe Al) know anything about it. Did anyone else read the article. I seem to be a slow metabolizer. Maybe there will eventually be more testing sites. I wonder if it is worth it to travel that far to get tested. I think it is called pharmacogenomics, meaning personalized medicine. The variation of the gene associated with warfarin metabolism is called 2C9. The article says that testing patients could reduce the number of overdoses from 16 percent to 6.5 percent. Wonder if all this is true.