Can I buy a fake paternity test? In modern society, paternity testing has become the choice of many people, because paternity testing can provide a lot of important information, especially for the identification of the child\’s father and property inheritance. However, in some cases, someone will want to fake a paternity test, which is illegal. So, can you buy a fake paternity test? The following will be elaborated on from four aspects. 1. It is illegal to forge a paternity test. It is illegal to forge a paternity test and it is very dangerous.