How many days after the same room can be used to detect pregnancy test paper

Pregnancy can be detected by dipstick 10-14 days after coitus.

The principle of dipstick detection of pregnancy is to determine whether pregnancy is possible by detecting the level of human chorionic gonadotropin (HCG) in urine. HCG is secreted by placental syncytial trophoblast cells after conception, and its level rises first in the blood and then can be detected in urine.

Usually, it takes about 6-7 days for fertilized eggs to implant in the endometrium after cohabitation, and then HCG levels will gradually increase. Therefore, as early as 10-14 days after cohabitation, some women may detect trace HCG in urine through high-sensitivity test papers, thus initially determining pregnancy.

To ensure the accuracy of the results, it is recommended to test a few days after the expected menstrual day, or choose the appropriate time to test according to the doctor's advice. At the same time, it can also be combined with other pregnancy symptoms, such as breast pain, nausea and vomiting, to determine whether pregnancy is comprehensive.