Blastocyst 4bc transplantation six days did not detect normal, the earliest 10 days after the transplantation of frozen blastocysts can be detected in the blood, it is best to go to the hospital about 12 days to draw blood to check, the pregnancy test stick test needs about twenty days. After transplanting frozen blastocysts into the uterine cavity, it generally takes 1~2 days from localization to invasion of the endometrium in the process of implantation, and after implantation the ectodermal trophoblast cells start to secrete HCG, and generally HCG can be detected in the blood in one week, but the blood value is very low; so it is best to go to the hospital to take a blood check in about 10~12 days, and the HCG can be measured in the blood at an early stage, and the results of the pregnancy test stick urinalysis will be relatively late. Don’t take a pregnancy stick test for six days after blastocyst 4bc transfer to avoid causing nervousness. After blastocyst 4bc transplantation, you need to go to the hospital according to the time, and the doctor will make individualized diagnosis and treatment plan according to the specific situation, so as not to delay the treatment.