US Sperm banks have promised anonymity to donors – but can they keep that promise? It was just after New Year’s 2019 that Danielle* received the startling Cease and Desist letter at the home she shares with her child in the US. The legal letter was sent from NW Cryobank, the sperm bank she used to conceive her daughter. In it, the sperm bank alleges Danielle has violated the Customer Agreement she signed with them after the sperm bank discovered Danielle had submitted her daughter’s DNA to popular home DNA test service 23andMe. Reading the intimidating letter, Danielle’s heart sank as she felt shocked….