Not all test tube transplants are weakly positive on day 12, and there are some women who test negative or positive on early pregnancy test paper.
Some women will have a weak positive test on the 12th day of in vitro fertilization, probably because the human chorionic gonadotropin (HCG) in the urine is not obviously elevated, resulting in a weak positive test, usually after a period of time, the test paper can be positive, but we can not rule out the use of the test paper in error resulting in a weak positive test.
There are also some women who test negative, such as women with low HCG in urine, incorrect use of early pregnancy test strips, and failed transplants. There are also a small number of women who test positive, which is mostly indicative of a successful transplant.
If there is a weak positive test on the 12th day of IVF transplantation, it is recommended to consult a doctor in time and improve the blood HCG and other related tests under the doctor’s guidance to clarify whether the woman’s transplantation is successful or not.