The simplest three steps to prove father-son relationship

Proof of paternity can be obtained through paternity testing, medical birth certificate, or notarization by a notary public. Paternity testing requires the collection of biological samples from both parties for DNA comparison. ； Medical certificate of birth requires parent identity information and delivery records ； For notarization at the notary office, you need to bring your household registration book and other valid documents to process the notarization of family relations.

1. Paternity test

Paternity testing is a scientific method to confirm the relationship between father and son, and it needs to be completed by a judicially qualified testing agency. Both parties need to provide biological samples such as blood and oral mucosa cells, and calculate the probability of paternity through DNA comparison. The judicial paternity test report has legal effect and can be used in scenarios such as settlement and inheritance. Ordinary personal identification is for reference only, and the cost varies greatly depending on the number of testing sites.

2. Birth medical certificate

After a newborn is born, a birth medical certificate will be issued by the delivery agency, clearly recording the information of the parents and children. To re-apply, you need to bring your parents’ identity cards, marriage certificate and birth record issued by the original delivery hospital. If the father’s information is missing, an additional paternity test report needs to be submitted. This certificate is an important basis for household registration and is valid for life, but the anti-counterfeiting label must be properly kept.

3. Notarization by a notary office

The notary office can handle family relationship notarization based on household registration books, household registration files and other materials. It is necessary to provide the original ID cards of both father and son and original documents that can prove the blood relationship, such as old household registers and unit personnel files stating the kinship relationship. Foreign-related uses must be certified by the Ministry of Foreign Affairs, and the notarization period is greatly affected by the integrity of the materials.

During the process, it is recommended to consult the list of required materials in advance to avoid multiple trips. For paternity testing, you need to choose a formal institution approved by the Department of Justice, and for reissue of birth certificate, you need to verify the hospital’s filing status. Before notarization, you can go to the police station in the place of residence to issue a kinship certificate as auxiliary material. All documents need to be checked for information accuracy, paying special attention to key fields such as name and ID number. When foreign-related matters are involved, sufficient time should be reserved for dual authentication procedures.