DNA testing can create unexpected issues and outcomes that have a far wider impact on people’s lives than they ever imagined. They can include unforeseen discoveries about conception, maternity and paternity, unknown siblings and relatives. They can also uncover family secrets and stories of loss and infidelity, as well as IVF mix-ups, fertility fraud, donor conception and adoption that can upend the lives of individuals and families. In turn, these discoveries can result in complex legal disputes about parentage, birth certificates, contact and upbringing of a child, child maintenance and inheritance, negligence as well as evolving issues about the use of personal genetic information. Given the rapidly evolving landscape associated with DNA testing, it is important to obtain specialist legal advice to identify, manage and resolve the complex and far-reaching legal and practical issues and outcomes.