Your first pregnancy check-up


Your first pregnancy check-up

On your first prenatal check-up, the doctor will confirm whether you are pregnant and give you the due date. You might also see tiny Your Child moving on an ultrasound. If you are older than 35 years old, the doctor might recommend some tests.

What to expect:

What to ask:

To prepare:

Optional tests
Women aged over 35, and those with a personal history of chromosomal abnormalities are suggested to do the following test:

Nuchal translucency test
The doctor will use a special ultrasound to measure the thickness of the back of the baby’s neck. If it is thicker than 3 mm, it means the baby might have a genetic disorder. This test can be carried out after the 10th week of pregnancy.

Amniocentesis test
This test detects anomalies in the fluid that surrounds your fetus in the uterus. Amniotic fluid has cells and other substances that help identify Down Syndrome, Sickle Cell Disease, Cystic Fibrosis, Muscular Dystrophy, Tay-Sachs, and similar diseases. The test can be done after 16-18 weeks and is 99% accurate. However, it has a small chance (0.5-1%) to cause miscarriage.

Chorionic villus sampling (CVS)
A small sample of cells (called chorionic villi) is taken from the placenta, which is attached to the uterus wall.  Chorionic villi have the same genes as the baby. CVS can help identify Down syndrome, cystic fibrosis, Tay-Sachs disease, and sickle cell anemia. This test can be done after 10-13 weeks and is 98% accurate, but it has a chance (2%) to cause miscarriage.


Dr. Wanwadee Sapmee Panyakat (OB-GYN) (1 February 2019)

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