Generally, pregnancy tests are more accurate when they are taken 2 weeks after sexual intercourse.
A pregnancy test is a means of measuring early pregnancy and is used to determine whether a woman is pregnant by detecting the level of HCG, the human chorionic gonadotropin concentration, in the urine. HCG can only be detected in the blood and urine after the embryo has been implanted in the uterine cavity, so the results are more accurate if you start the test after 2 weeks of sexual intercourse.
If the test is taken too early, the embryo has not yet implanted or has just implanted, and the HCG value in the woman’s body has not yet increased to a level that can be detected, and the result is not very accurate at this time, therefore, generally speaking, the test should be taken after 2 weeks of sexual intercourse, and the result will be more accurate if the test is taken in the first urine in the morning.
After the pregnancy test, but still have errors, it is recommended to go to the hospital in time, under the guidance of the doctor to do the relevant examination, the results are more accurate.