0 1 The party concerned shall provide the original valid certificate, which shall be copied and filed by the staff of the appraisal unit after it is verified, and the original shall be returned to the party immediately.

The parties personally fill in the Application for Paternity Identification, including the basic information of the parties and the reasons for the application. If the child is young and can't write, it can be filled in by the parents, and then confirmed by the child's fingerprint.

The paternity test unit will take photos of the parties and file them, and the photos will be used in the paternity test report.

04 Collect blood samples of each subject, and take 2-3 ml of blood from each person; After the blood collection is completed, the signature of the blood collector is required, and the blood collector will confirm it according to the fingerprint; The parties concerned pay the paternity test fee.

Experimental process of paternity test

0 1 sampling

DNA can be extracted from blood, hair with hair follicles, oral mucosa cells, cigarette butts, toothbrushes, nails and so on. According to different identification items, different types of samples are taken.

02 extraction

Add special reagent to the sample to rupture the cell membrane, boil the denatured protein, and then separate the DNA template.

03 amplification

Polymerase chain reaction (PCR amplification) is used to replicate target DNA fragments, sometimes even tens of thousands of times. DNA is two strands, and amplification needs to open the strands and then combine each strand with the required material. You need one temperature when you open it, and another temperature when you close it, so you need to change the temperature constantly in this process. After many cycles of high temperature denaturation, low temperature annealing and primer extension, the DNA fragment grows exponentially.

Detection gene analyzer used capillary electrophoresis technology to perform DNA sequencing analysis, and obtained STR (short tandem repeat sequence) typing results.

05 data analysis

Analyze whether a single sample meets the detection standard, and then calculate the parental index between two samples.

Publish a report

It takes 5-7 working days from entrustment to issuance of the report. If you need to know the results urgently, you can choose the express service. There are 3-hour express results, 1 day express results and 3-day express results, and you need to charge a certain express fee.

Legal basis:

The Supreme People's Court's explanation on the application of the marriage and family series of the Civil Code of People's Republic of China (PRC) (1) Article 39 If one parent brings a lawsuit to the people's court to deny paternity and has provided necessary evidence to prove it, the people's court may consider that the claim of the parent who denies paternity is established.

If one parent or adult child sues for confirmation of paternity and provides necessary evidence to prove it, and the other parent refuses to do paternity test without evidence to the contrary, the people's court may consider that the claim of the parent who confirmed paternity is established.