DNA test - GN
Greyhound Neuropathy (GN) is caused by a recessive mutation. To be affected, two copies of the disease gene must be inherited; one from each parent. Carriers of this disease, who have inherited only one copy of the gene, will show no clinical signs, but can pass the gene on to offspring. Clinical effects of GN may include muscle weakness, exercise intolerance and a “bunny-hopping” gait. This neurological disease often first presents in young dogs (around three to nine months) and may rapidly progress within their first year.
Source of DNA test: http://www.thekennelclub.org.uk/download/8288/dnatestsworldwide.pdf