Early pregnancy test strips are convenient to use and are loved by many families preparing for pregnancy. But do you know what principle is used for early pregnancy test strips? Early pregnancy test strips and urine tests are actually used to determine whether a female friend is pregnant by checking the concentration of hCG. From a medical perspective, Hcg can also be referred to as human chorion. Next, let's take a look at what BHCG dilution means?
HCG gonadotropin, also known as human chorion, enters the maternal blood after fertilization and rapidly proliferates. By the 8th week of pregnancy, it slowly decreases and remains stable until the 18th to 20th week. What does HCG dilution mean? The purpose of dilution is because if the HCG value is too high and exceeds the recognition range of the assay machine, it will not be able to provide results. Therefore, diluting a certain proportion will result in more accurate measurements. A normal beta HCG radioimmunoassay value of less than 3.1 can be considered a possible pregnancy if it exceeds 5, and can be determined in more than 10 pregnancies.
HCG may rise to over 2500IU/L 35-50 days after pregnancy, and multiple pregnancies often result in more than one HCG in urine. After 9 days postpartum or 25 days after induced abortion, serum HCG should return to normal. If this condition is not met, abnormal possibilities should be considered. The early diagnosis of ectopic pregnancy mainly involves testing for blood HCG (chorionic gonadotropin). As HCG is a specific secretion of pregnancy hormones, β - HCG can be used to assist in the early diagnosis of unruptured ectopic pregnancy. If the daily titer of β - HCG increases by more than 66% every two hours, and if the increase exceeds 66%, the amount of HCG secreted by normal development continues to rise rapidly the next day, it can be diagnosed as intrauterine pregnancy; If the increase is less than 66%, there is a high possibility of ectopic pregnancy or underdeveloped intrauterine pregnancy.
The above is the encyclopedia's introduction to the meaning of bhcg dilution. In summary, the optimal time for blood hCG testing is 8 to 0 days after sexual intercourse, at which point the test can be used as a pregnancy test to confirm pregnancy. Meanwhile, during the first 3 months of pregnancy, this examination can also be used to diagnose single or multiple pregnancies.
