What are the criteria for determining paternity in a paternity test?

Criteria for the exclusion of paternity and the determination of paternity:

a) Criteria for the exclusion of paternity The presumed father's fatherhood, i.e., the presumed father is not the biological father of the child, provided that the presumed father is not provided with the necessary alleles for the child, provided that there is no mutation. To avoid potential mutational effects, exclusion of paternity should be based on at least two or more genetic markers. Under no circumstances can paternity be excluded on the basis of a single genetic marker.

b) Criteria for determining paternity Men presumed to be paternal cannot be excluded from paternity by standardized experiments that test genetic markers. After calculating the probability, if the following two indicators are met at the same time, the paternity of the presumed father can be determined, that is, he can be concluded to be the biological father of the child. The two indicators are:

i.The cumulative non-paternal exclusion rate of the experimental detection of genetic markers is equal to or greater than; ii.It is assumed that the father's cumulative paternity index is equal to or greater than 2000, i.e., the relative paternal opportunity of the assumed father is equal to or greater than the same as the previous probability.

In general, when the paternity test of the parent-child triplet is the biological father-mother, the cumulative parental authority index of the mother and child and the cumulative parental authority index of the parent-child triplet are calculated.

In the paternity test of the parent-child triplet, where the mother is the biological mother and the father is not the biological father, the cumulative parental authority index of the mother and the cumulative parental authority index of the father and son are calculated.

In the paternity test of the parent-child triplet, where the mother is not the biological mother and the father is the biological father, the cumulative parental authority index of the mother and the cumulative parental authority index of the father and son are calculated;

In the paternity test of the parent-child triplet, where the mother is not the biological mother and the father is not the biological father, the cumulative parental authority index of the mother and the cumulative parental authority index of the father and son are calculated.

Legal Analysis:1Identity verification: The parties must provide the original of valid documents such as ID card (passport), birth certificate, marriage certificate, etc., which will be checked by the staff.

2.Fill in the application: The party fills in the "paternity test application" in person, including the basic information of the party, the reason for the application, etc. If the child is young and unable to write, the parents can fill in the form on their behalf, and then the child will confirm it by pressing the fingerprint.

3.Photo archiving: The paternity testing unit will take photos of the parties for archiving, and the group photo** will be used for the paternity test report.

4.Collect blood samples: collect blood samples from each party, collect 2 3 ml of blood per person, and require the signature of the party being collected for blood collection, which will be confirmed by the party according to their fingerprints. Cheating.

5.Issuance of a report: Generally speaking, the paternity testing center can issue an authoritative and accurate judicial paternity report within about 10 working days.

Legal basis: Article 1058 of the Civil Code of the People's Republic of China Husband and wife equally enjoy the right to raise, educate and protect their minor children, and jointly bear the obligation to raise, educate and protect their minor children.

The process of paternity testing for father and son:

1. The entrusting unit fills in the power of attorney. Entrusting units include public security, procuratorates, courts and other organs and law firms;

2. Voluntarily provide the ID card and birth certificate of the person being appraised, and leave a copy;

3. The person being evaluated voluntarily takes a photo;

4. Take a blood sample of the person to be evaluated;

5. Send the specimen to the professional and technical personnel and sign for it.

Conditions for paternity testing by father and son:

1. Appraisers are required to present relevant documents, including ID cards, household registration books, marriage certificates, etc., if the documents are lost, they need to go to the relevant local departments to ask for relevant certificates and affix official seals;

2. The personnel involved in the appraisal must go to the appraisal machine to collect relevant blood samples;

3. Judicial paternity testing requires that photographs and video recordings must be made in the process of identification;

4. Judicial paternity testing must have a entrusting unit, which can be a public security bureau, a procuratorate, a court, a shantytown enterprise or a government organ at all levels, or a law firm. The entrusting unit must issue a power of attorney, which indicates the name of the client, the cause of action and the appraisal needs.

Legal basis]:

Article 39 of the Interpretation of the Supreme People's Court on the Application of the Marriage and Family Section of the Civil Code of the People's Republic of China.

The father or mother files a lawsuit with the people's court requesting a denial of paternity;

Where necessary evidence has already been provided to prove it, and the other party refuses to conduct a paternity test without evidence to the contrary, the people's court may find that the claim of the party denying paternity is sustained.

The parent and the adult child file a lawsuit to confirm paternity and provide the necessary evidence.