Chapter 152: It turns out to be an old acquaintance?

"Currently, there are three main methods of using DNA for paternity testing in clinical practice. The first is non-invasive paternity testing, the second is chorionic villus paternity testing, and the third is amniotic fluid paternity testing." When he said this, he turned his head and looked at Jiang Yifei.

The old man looked at him solemnly and seriously , " Go on!"

Si Wenjian snorted in his heart. He just didn't believe that he couldn't cure this little girl?

Tang Yuanzhong was silent for a moment, and then continued , " Different identification methods require different adaptation times. Non-invasive DNA paternity testing can be done about 6 weeks after menstruation stops; chorionic villus paternity testing can generally be done between 12 and 14 weeks; and amniotic fluid puncture paternity testing can generally be done after 18 weeks, which is what we said before, wait until she is a little older before doing the paternity test."

"But in the past,