Actually, I heard it on the news that it was a positive confirmation. Also I heard General Kimmett's announcement.
So, I had to go find a link for you. Here is one from the DOD.
It doesn't give specifics about the testing but it does say that it is sarin.
The Pentagon reports with Bret Baier also confirmed it.
http://www.defenselink.mil/news/May2004/n05172004_200405174.html
Thanks, but again, what has happened is that initial field tests show sarin, the troops have symptoms consistant with a nerve agent, and the shell casing is consistant. However, we have been duped before. Let's wait for the final lab report.
Also, we need to find others, before going off and shouting all over the world.