Derisi Assay The paragraphs below were posted on a listserv, and I have permission of the author to re-post here. The author said that he does not know if the Derisi Assay can detect the XMRV virus. ......................................... A patient of Dr. Dan Peterson mentioned that he will getting the Derisi Assay soon. For those of you who are not familiar with the test, it tests for 70 different viruses. The Derisi Lab( @ UCSF) was used by the CDC when the SARS outbreak occured to identify the virus casuing SARS. The report was featured on a investigative TV show like 20/20 a few years ago. (The report or transcript might be available to access on the internet, worth seeing.) The Derisi lab has the genome of almost every virus known to exist in their data base, so I can see why Dr. Peterson would want to use that test on a CFS patient. Sue B.