Can a pregnancy test detect pregnancy after one month?

When a woman is about one month pregnant, a pregnancy test stick can generally determine whether she is pregnant, but there is still a certain possibility of false positives or false negatives. Pregnancy test sticks work by detecting the presence of human chorionic gonadotropin (hCG) in a woman's urine to determine pregnancy. In a normal 28-day menstrual cycle, ovulation typically occurs around day 14 of the cycle. Therefore, around 14 days after ovulation—approximately 28 days after conception—the fertilized egg has usually implanted and begun to secrete hCG. At this point, a pregnancy test stick can typically detect the presence of hCG and thus determine whether a woman is pregnant. However, during early pregnancy, hCG levels may still be relatively low, and the test may not accurately detect pregnancy, sometimes resulting in a false negative. In addition, improper use or storage of the test stick can also lead to false positive or false negative results.

To obtain more accurate test results, it is recommended that women perform a pregnancy test one month after conception, following the correct testing procedure. If the result is positive, it is advisable to visit a hospital for further blood hCG testing and ultrasound examination to confirm the pregnancy and assess fetal development. If the result is negative but pregnancy is still suspected, the test can be repeated a few days later or a healthcare provider can be consulted for professional evaluation.