I have heard from others that Zoologix uses nasal pharyngeal swabs, but I haven't had testing before. My chickens with suspected IB were sick for 3-4 weeks. They really were not that ill, but just sneezed often. I just separated the sneezing hens away from the others. Eventually, most of the whole flock got it, but not too bad. Here is the link for Zoologix:
http://www.zoologix.com/avian/Datasheets/PoultryRespiratoryPanel.htm
Someone posted that the respiratory panel is $95.
http://www.zoologix.com/avian/Datasheets/PoultryRespiratoryPanel.htm
Someone posted that the respiratory panel is $95.