Non-invasive plus, or non-invasive DNA, is a type of prenatal screening that does not require fasting because eating generally has no effect on the results.
Non-invasive DNA can detect the presence of fetal DNA abnormalities through high-throughput sequencing of fetal DNA extracted from the mother’s venous blood, and can effectively screen for fetal genetic diseases.
Generally, non-invasive DNA testing does not require fasting, because the amount of fetal DNA in maternal venous blood is relatively stable, and eating or not eating has almost no effect on the accuracy of the test results, and eating on an empty stomach is acceptable.
Non-invasive DNA test is generally recommended to be performed at 12-20 weeks of pregnancy to avoid affecting the accuracy of the results.
Pregnant women who want to do non-invasive DNA are advised to go to a regular hospital and consult a professional doctor.