Hong Kong DNA maternal blood test for baby gender, how many weeks pregnant can you use blood test to identify male and female

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Usually, the most familiar way to determine the gender of the fetus is ultrasonography, but it is illegal to do fetal gender identification in the mainland, and sometimes ultrasonic examination is because of the fetal posture and angle, and the doctor’s There will inevitably be errors in the level.
Out of curiosity about the gender of the baby in the fetus, there are special reasons such as naming the baby in advance and purchasing clothes. Nowadays, more and more people choose to go to Hong Kong to draw blood for fetal gender identification when they are older than 1 week of pregnancy. This test method is highly accurate, safe and convenient, and has no impact on the fetus. The test results can be known in about a day. This testing method is commonly used by pregnant mothers in Hong Kong. .
The main reliable gender identification methods are
Ultrasound can only be carried out after the first week of pregnancy, the accuracy is high, and the fetal position must be matched.
Diamniocentesis is performed at every week of pregnancy, and it is accurate, and has a miscarriage rate
Trichorionic villus biopsy is performed at every week of pregnancy, and it is accurate, and it has a miscarriage rate and causes disability of the fetus' hands and feet.
Blood can be drawn to identify gender within four weeks of pregnancy, which is accurate, safe and reliable