Anouda non-invasive DNA, is this reliable?

Paternity appraisal must be conducted in the local judicial appraisal institution. For details, please consult the local judicial bureau or the provincial judicial department, or consult the directory of local formal judicial authentication institutions in official website. Many organizations on the Internet claim that paternity testing can be done, and it is recommended to choose carefully to avoid being fooled. The price is generally around 3000, so be careful if it is too high or too low.