What are the steps required for parentage notarization?

1. Pregnancy out of wedlock or family disputes suspect that the child is not the biological child;

2. Confirm the long-lost family members;

3. The biological child must be confirmed for inheritance relationship, or the identification of the biological father of the test-tube baby;

4. Suspecting that the hospital transferred the wrong newborn baby;

5. Suspecting of circumventing the family planning policy, using biological children as adopted children or passing them over The unborn child is raised by others;

6. The immigration notarization must confirm whether the immigrant is biologically related to someone.

Methods for paternity testing:

1. The traditional paternity testing is a blood type test. Generally, it can only be done on children over 6 months old, and requires a large amount of blood samples. This method is cumbersome, painful to sample, and has a high error rate. Traditional blood type judgment has its role to a certain extent, but paternity testing cannot identify based on blood type.

2. DNA paternity test. DNA paternity testing is done through sampling of any tissue in the human body (such as oral epithelial cell sampling), and can also be done before the child is born. This method is currently the most accurate type of parent-child test - the accuracy rate can reach 99.99999%. It is compact, simple, fast, economical and practical. Relative probability of father-child relationship (RCP), according to domestic and foreign paternity testing practices, when the RCP value is greater than 99.73%, it can be assumed that the father and the child have a biological relationship.

3. SNP detection. Current DNA paternity testing uses repetitive base sequences in the human genome (STR as a second-generation molecular marker) and PCR technology for individual identification, but STR has great limitations. SNP is a third-generation molecular marker technology that is the future development. Direction, the United States used this technology to identify the corpses of 911.

The cost and time required for paternity testing

The current charging standard for DNA paternity testing is about 3,500-5,000 yuan per case for less than 3 people. Generally, the test can be obtained within two weeks. Results, such as