Blood tests for progesterone and HCG usually do not require fasting because progesterone and HCG are human hormones and their levels in the body are not affected by food. HCG is secreted by the trophoblast cells of the placenta, and progesterone is mainly secreted by the corpus luteum of the ovary in early pregnancy, and after mid-pregnancy, it is mainly produced by the placenta. Eating will not affect the concentration of HCG and progesterone in the blood, so it will not have a noticeable effect on the test results. Clinically, serum progesterone values and serum HCG are often used to understand the development of the embryo in pregnancy. Under normal circumstances, in intrauterine pregnancy, blood HCG doubles every other day and progesterone gradually rises, indicating that the embryo is developing well. If there is a bad doubling of blood HCG every other day and a decrease in progesterone value, usually accompanied by bleeding, abdominal pain and other symptoms, the possibility of preeclampsia is high. It is recommended that pregnant women should, under the guidance of a doctor, undergo the appropriate tests on time, and if the test results are abnormal, clarify the cause of the disease in a timely manner and treat the symptoms.