Public review preview. Candidate definitions have not yet been read by the two reviewers. Each entry shows its review status.
learning

Judged: two independent readers; copy check clear.

human chorionic gonadotropin

human chorionic gonadotropin Human chorionic gonadotropin, often measured as β-hCG, is a hormone released by trophoblast cells after implantation in early pregnancy.

Human chorionic gonadotropin, often measured as β-hCG, is a hormone released by trophoblast cells after implantation in early pregnancy. In maternal blood, its pattern of change is used as a marker of early pregnancy development, because pregnancies with poorer outcomes may show slower increases or falling levels rather than the usual rise.