Sorry for my frivolous reply. The DNA tests are usually rapid these days but of course the verification process may be a bit time consuming. I read somewhere that one of his defecting helpers had stolen his pants and smuggled it out beforehand so that this can be verified. Currently both the Iraqis and the Kurds are claiming they helped track Al Baghdad. There are also reports that the Kurds helped in the tracking and liquidation of the second in command near Jarablus. But of course few people are interested in the actual ptoof being produced these days. Even the OPCW seems to be untrustworthy these days as discussed here.