The egg-breaking injection, human chorionic gonadotropin, is usually metabolized 7 days after injection.
Human chorionic gonadotropin is a protein secreted from the trophoblast cells of the placenta and is used to stimulate the corpus luteum, promote follicular maturation in women or stimulate ovulation. False-positive results may occur if a pregnancy test is performed within one week after human chorionic gonadotropin injection. Based on the half-life of human chorionic gonadotropin, it is usually gradually metabolized in 7 days.
Human chorionic gonadotropin exists in different sizes such as 2000 units, 5000 units, etc. After injection of different sizes of human chorionic gonadotropin, the metabolism time varies to some extent, influenced by the amount injected. A blood HCG test can usually be performed after the drug is metabolized.
Although human chorionic gonadotropin can be gradually metabolized in about a week, it is usually better to perform the test about 10 days after injection to ensure the accuracy of the blood HCG test results.