I'll call the vet for you, lol, they should have them. Heck, even Jeffers sell these:Kathy, I called those labs. Same answer from everyone - Bring them a live chicken to cull & test. They gave me the number to vet that is supposed to cover my area so he could come out here. He never returned my calls. I will try again on Monday. Also, per your advice, I have been trying to learn more about tube feeding. I asked my vet & his only advise was to check with a dentist about getting the tube. I dunno. I will keep working at it so I can be more prepared if another gets sick.
All my chickens are fine as far as I can tell. I fed medicated starter for several months. Went off. Gave a 7 day round of corid. Put back on starter for another couple of months. Now on layer crumbles & free ranging all day plus kitchen scraps (usually breads or eggs or veggies). Poop is very health, not runny or dark or red at all. We have a poop hammock under their roost boards so the run floor stays clean. I use diatomaceous earth, put apple cider vinegar in the water.
I worry what they may have eaten since they do free range. But my yard is full of wild birds, so they could have easily been exposed to a virus or such.
Fingers crossed.

http://www.jefferspet.com/weak-kid-syringe/camid/LIV/cp/S7-W6/cn/330/
-Kathy