Non-invasive DNA test results usually come out in about 1-2 weeks, but the time for the results to come out varies due to different hospital conditions. Non-invasive DNA mainly detects whether the embryo has chromosomal abnormalities, including trisomy 13, trisomy 21 and trisomy 18, which are serious health hazards. Non-invasive DNA testing is performed by drawing blood on an empty stomach, probably around 12-22 weeks of pregnancy to screen for fetal malformations. Generally, the test results come out in about 1-2 weeks, but due to the different conditions of hospitals, the result time may be related to the level of hospitals and the number of patients, and the result time may be affected by holidays. Therefore, if the results of the non-invasive DNA test are abnormal, the hospital will notify the pregnant woman or her family by phone, and advise them to follow the doctor’s advice to choose the right intervention program.