How accurate is the pregnancy test stick?

When a woman is just pregnant, it is impossible to detect the disease through B-ultrasound examination in the hospital because the pregnancy has just started. At this time, if you are eager to know whether you are pregnant, you need to use a pregnancy test stick. Go to the drugstore to buy a pregnancy test stick and use the first urine of the next morning to test to see if you are pregnant. So we can't help but wonder, how accurate is the pregnancy test stick? So let’s find out today.

Pregnancy Test Kit is commonly known as pregnancy test stick, pregnancy test piece or pregnancy test card. Test principle: The so-called test is to use the HCG contained in the urine to check, which is a hormone secreted by pregnant women; this hormone exists in urine and blood. General pregnancy test kits use the reaction of single and multiple HCG antibodies in the device combining with antigens in urine to determine whether the pregnancy is present.

The accuracy rate of pregnancy test sticks from regular brands is about 85% to 95%... First of all, we need to clarify some issues: ovulation occurs around the 14th day of the menstrual cycle. Assuming fertilization is successful at this time, it will take at least 6 or 7 days for the fertilized egg to produce HCG. Pregnancy test sticks are determined by testing urine HCG. HCG actually starts to be secreted in large quantities after the fertilized egg implants, and the syncytial trophoblast begins to secrete large amounts of HCG. It takes at least 11 days for the fertilized egg to implant. So, the earliest is 6 days. If you want more accuracy, wait until 11 days, as it will be more accurate then. You can make your own guess.

We can see that the accuracy of regular pregnancy test sticks is quite high. Therefore, for female friends who have just become pregnant and want to know whether they are pregnant, they can go to the pharmacy to buy a regular brand pregnancy test stick and use their own urine to do a pregnancy test. Remember, if you want to verify it more accurately, estimate your conception date based on your ovulation period, and then push it back 11 days. At this time, the accuracy of the pregnancy test will increase again.