Different months of pregnancy, there are differences in the precautions to be taken before the pregnancy test, generally need to pay attention to fasting, check within the specified time, wear loose clothing, etc.. 1. Fasting: When pregnant women undergo a pregnancy test, if they need to take blood to check their liver function, kidney function, blood sugar, etc., they generally need to fast for 8 to 12 hours, and then take the test on an empty stomach in the morning. It is recommended that pregnant women prepare some snacks to replenish energy immediately after the blood draw to avoid hypoglycemia. 2. Examination within the prescribed time: The examination items are different at each stage of pregnancy, so it is recommended to follow the doctor’s instructions and perform the examination within the prescribed time, so as not to affect the examination results if the examination is performed too early or too late. 3. Wear loose clothing: Before the pregnancy test, it is recommended that pregnant women wear loose clothing to facilitate the test. Specific precautions may vary with each test, so it is recommended to consult your obstetrician.