In the United States, NCL can be tested through OFA. They send you a cheek swab kit. You send it back to them via mail. http://www.ofa.org/dnatesting/ncl.html Ichthyosis is via University of Pennsylvania. You draw a small amount of blood at your vet and mail the sample out to them. UPDATE: you can now submit a cheek swab sample for ICH as well! http://research.vet.upenn.edu/Default.aspx?alias=research.vet.upenn.edu/penngen Cost of each is about $60 and can be done at any age even as a small puppy since the actual DNA is tested. Although Ichthyosis can only be tested at U Penn in the United States. NCL is widely available for testing in Europe as well. http://www.laboklin.co.uk/laboklin/showGeneticTest.jsp?testID=8075 Laboklin has testing facilities in Germany, the United Kingdom, and even Italy.