What is the function of blood tests in early pregnancy?

Patient's question:

During pregnancy, it is always very uncomfortable, and morning sickness is also very severe. What is the function of blood tests in the early stages of pregnancy?

Doctor's answer:

Starting from the first day of your last menstrual period, you can check if you are pregnant. It's difficult to detect the embryo with an ultrasound in the first month, but a color Doppler ultrasound can be used. Urine tests can be inaccurate and not always reliable, so they are used as a preliminary check. A double ultrasound check is generally recommended. In most cases, doctors advise patients with signs of genetic risks to maintain personal hygiene and avoid sexual activity. Additionally, patients should pay attention to creating a comfortable environment, which is beneficial for rest. Wishing the patient a healthy delivery.

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