There is no genetic test for Wobbler's Syndrome. The only way the disease can be diagnosed is through MRI/CAT scans if I remember correctly.

The dna test is for vWD (von Willebrand's Disease), though dogs can be clear by parentage without having the test performed.

Dobermanns should be tested for Hips, Elbows (not as important or as widely used), vWD, PHPv, Full blood work/Thyroid, DCM (Holter/Echo/DNA Genetic Marker). The blood work will show if there are elevated levels of leukocytes/white blood cells suggesting something may be wrong. The blood works should also detail liver/endocrine issues as the breed is highly prone to Copper Toxicosis/Chronic Active Hepatitis. This goes without saying testing for brucellosis and other doggie sti's.