when is hcg detected in blood after implantation
Pregnancy test While hCG is a reliable marker of pregnancy, it cannot be detected until after implantation;[1] this results in false negatives if the test is performed during the very early stages of pregnancy. HCG can be detected via blood 8 days after fertilization of the egg, and in the urine 10 days after.
Implantation (human embryo) In humans, implantation of a fertilized ovum is most likely to occur around 9 days after ovulation, however this can range between 6 and 12 days.[1]