NO plant samples...PLEASE lol
That rapitest wont do tissue either...only soil.
You can contact the extension ahead of time and they can mail out a kit with instructions on how to collect, store, and ship the sample to them. So you don't have to actually go down there if you don't want to (most of the time). You might have to put postage on there, and a return addy would be required, but you could always use your safe address (moms house).