[mass noun] A hormone secreted during pregnancy by the placenta which stimulates continued production of progesterone by the ovaries.
- ‘Ectopic pregnancies produce lower concentrations of human chorionic gonadotrophin than normal pregnancies, but the change in concentrations provides more information.’
- ‘The use of serum human chorionic gonadotrophin and progesterone concentrations might identify women who require evacuation, but the evidence to recommend their routine use is insufficient.’
- ‘This chorionic gonadotrophin makes the ovary continue to secrete progesterone, which in turn, via the blood, makes the uterus maintain its welcoming lining, avoiding the catastrophe (for an embryo) of menstruation.’
- ‘There is a sudden rise of a hormone called human chorionic gonadotrophin during early pregnancy, which controls the production of other pregnancy hormones.’
- ‘The tests work by detecting the hormone human chorionic gonadotrophin in your urine.’