A blood test for pregnancy can be done 7-10 days after intercourse, and the blood test for pregnancy will be earlier.
After men and women have intercourse, the sperm and egg meet to form a fertilized egg, which usually implanted in 6-7 days after intercourse, and the trophoblast cells start to secrete HCG after successful implantation, that is, after 7-10 days of intercourse, you can judge whether a woman is pregnant or not through blood sampling; the longer the period of time after intercourse, the more accurate it will be.
Each unit uses a different instrument to draw blood, and the unit after the test is also different. The value detected is greater than the reference value on the report card, indicating that the woman is very likely to be pregnant.
The result of the blood test is pregnant, accompanied by the phenomenon of menstruation does not come, basically indicates that the woman is pregnant.
It is recommended to go to a regular hospital for blood test to improve the accuracy of the test.