Clinically, the fertilized egg will be laid in the endometrium about 6-7 days after ovulation, and after it is laid, the woman’s body will secrete the indicator of human chorionic gonadotropin, which is often referred to as HCG in clinical practice. If pregnancy is confirmed, it will show two bars, which may be light red or equally red, but as long as they are two, it will prove pregnancy. In the case of delayed menstrual cycle, the results judged within 5-10 minutes through the correct testing method are generally accurate, and the accuracy rate of pregnancy test can reach more than 98%. If this test is weakly positive, another brand of pregnancy test can be chosen for further diagnosis.