There is a tremendous amount of information about Siberians and their lower allergen levels, some of it accurate, some of it with numerous inaccuracies. We've been breeding for almost 10 years and were among the first breeders to test our Kings and Queens as well as our kittens. We know that we have low allergen cats and we back it up with the objective lab results.
Have you checked out www.kittentesting.com yet? If not, I recommend it highly. The information contained on the site is factual and has the science to back it up.
The ranges below were created by the KittenTesting.com team and we have found them to be reasonably applicable to the many folks who suffer with cat allergies that test with us. Most of our kittens will be in the extremely low to very low range and tolerated by by those with mild to severe cat allergies.