There are more methods of DNA testing for children, and the common clinical methods are blood test, amniotic fluid test and cell test.
1. Blood test: DNA testing can be done through blood test, drawing peripheral venous blood for biochemical testing, and then understanding the basic situation.
2. Amniotic fluid test: If you want to test the DNA of the fetus during pregnancy, you can choose the method of amniotic fluid test. Usually after 16 weeks of pregnancy, the amniotic fluid in the amniotic cavity is extracted under the guidance of ultrasonic wave in order to obtain the fetal DNA for testing.
3. Cellular examination: DNA testing can also be done through tissue cell examination. This method is to analyze DNA through specific equipment, which can understand the information situation and gene type of the test, and also determine whether there are genetic defects or other congenital diseases.
If a child needs DNA testing, it is recommended to choose a local formal hospital to conduct the relevant examination, so that the results of the examination are more accurate and credible.