Patient's question:
Because it's the second child, I want to have a boy, and I want to determine the sex of the fetusDoctor's answer:
Gender identification refers to the use of theories from medicine, biology, and genetics, as well as polymerase chain reaction (PCR) technology, fluorescent quantitative analysis technology, and other methods. It involves multiple centrifugation separations of DNA chromosomes to detect the presence of the Y chromosome in blood samples, thereby determining the fetal gender. Gender identification is typically performed before the fetus is born by drawing 12ml of blood from the pregnant woman to analyze and identify the fetal gender by detecting free fetal DNA chromosomes in the mother's body.