Let's see pics of your Isolation/Quarantine pens! :)

[Funky Feathers]

There is a test for Marek's, but it can only be done on a dead bird. If you have one that died and you suspect Marek's you can send the bird to your Dept. of Ag (Animal Health Lab) for the test. They cut off the tendon (back of lower leg) and test that.