Group B Streptococcus DNA can be tested for the bacteria by taking rectal swabs and lower 1/3 vaginal swabs from pregnant women. If the test result is positive, it means that you are infected with the bacteria and need to be treated with medication as prescribed by your doctor. It is recommended that pregnant women be tested for the bacteria on a rectal swab or a lower 1/3 vaginal swab at 35-37 weeks of pregnancy. If either of these two sites is positive after DNA testing for group B streptococcus, the organism is infected with group B streptococcus. Pregnant women whose bodies are infected with group B streptococcus need to be treated with antibiotics such as cefixime and penicillin at the onset of labor or after rupture of the membranes under the supervision of a doctor. It is recommended that pregnant women who want to undergo DNA testing for group B streptococcus need to seek medical attention, and the doctor will choose the appropriate test according to the condition of the pregnant woman. In addition, the anus and perineum need to be cleaned before the Group B Streptococcus DNA test.