Even if you send it in anonymously, your DNA is so unique to you that by comparing it to other data you can infer at least the last name.<p>See for example <a href="http:&#x2F;&#x2F;www.ncbi.nlm.nih.gov&#x2F;pubmed&#x2F;23329047" rel="nofollow">http:&#x2F;&#x2F;www.ncbi.nlm.nih.gov&#x2F;pubmed&#x2F;23329047</a>