Baby-rearing artifact advertisement Bao Ma is also asking a similar question. I would like to ask you to have a prenatal checkup in Bengbu Second Hospital in the morning. When can you draw blood on an empty stomach and test the results? What do you need? Everyone knows how long it takes to do non-invasive DNA in the Affiliated Hospital of Hainan Medical College. What is more appropriate for the baby to wear here in Hebei?