Yes, even though your ferrets are not at risk to spread the disease, you should test for it. Many vets with a lot of experience with adv are now suggesting that adv positive ferrets don't get annual vaccinations or have surgeries, as both can provoke the symptoms of adv to appear. So knowing if your fuzzies are positive can help you to make informed decisions about their care. Please thank your vet for being proactive, and taking the time to educate himself about this disease. [DA] [Posted in FML issue 3579]