Blastocyst fifth day to detect the intention of gray can be done first to observe, normal transplantation after 10 days to detect, so the fifth day detection is not normal. Idea Grey is an inconspicuous color or positive test on early pregnancy test paper and no reaction after the second test. On the fifth day after blastocyst transfer, the finding of an intended gray color with the morning pregnancy test paper does not prove that the transfer has failed, nor does it estimate the likelihood of success. Because the test paper is used to detect the concentration of human chorionic gonadotropin, or HCG, in the urine, when two distinct red lines are detected, consider pregnancy a possibility. In addition, the fifth day of the blastocyst measured the intention of gray, after all, the time is short, so there is also the possibility of biochemistry, or fertilized eggs did not bed. You can test again after 10 days. After the transfer of blastocysts, you need to pay attention to rest, take good care of yourself under the guidance of a professional doctor, and regularly recheck the blood HCG to check the changes in the indicators.