Quote Originally Posted by Chilli
I've been through the whole myco thing with my rats before(its the whole reason I'm so insistant about quarantining all new animals).
If you're worried about Myco quarantining will do no good. Almost all rats carry Mycoplasma. Pretty much the only way a rat won't have it is if it came from a lab or was born via c-section. It is very very rare a rat will test negative for Myco. Also, despite what a lot of people think, Myco isn't the only disease that can cause off and on symptoms. There are many other viruses/bacteria out there that stick around forever such as CAR and others.

Here is a link every pet rat owner should read!

http://ratguide.com/health/bacteria/...oplasmosis.php