The common HCG values at 7 days of blastocyst transfer are as follows: 1. For women aged 20-25 years, the value of HCG at 7 days of blastocyst transfer ranges between 0.5-0.56 μmol/L. In younger women, the hormone levels in the body are relatively high, such as estrogen, sex hormone, progesterone, and luteinizing hormone, which will indirectly affect the For women aged 25-30 years old, the HCG value at 7 days of blastocyst transfer ranges from 0.6-0.655 μmol/L, because when women are 25-30 years old, the function of the endocrine system in the body will be further improved and strengthened, and the level of various hormones will also increase, and the half-life will be relatively longer, so the HCG value will be larger. The value of HCG will be larger.