12 weeks of pregnancy requires checkups for routine items, NT ultrasound of the posterior nuchal translucency band, and more. The development of the fetus at 12 weeks of pregnancy is still unstable, in order to better check the development of the fetus it is necessary to have a physical examination during this period. 1. Routine checkups: Routine checkups generally include blood pressure, BMI, electrocardiogram, fetal heart rate, blood and urine routine, fetal blood group, liver function and kidney function, and common viral antigens such as Hepatitis B Virus, Syphilis Spirochete, HIV, and so on. 2. Posterior nuchal translucency NT ultrasound: Measure the thickness of fluid accumulation in the subcutaneous tissue of the posterior nuchal region of the fetus to infer whether there is any abnormality in the chromosomes and cardiovascular system of the fetus. For example, in children with Down syndrome, the fetal posterior nuchal translucency zone is abnormal. This test is especially important for pregnant women over the age of 35 and for those who have given birth to a child with Down’s syndrome. In addition, pregnant women can also be screened for other medical checkups according to their individual needs, such as 4D ultrasound, glucose tolerance test, and so on.