•The rate of change in serum hCG levels from two consecutive visits was determined and compared to a minimal rise of 35% in 2 days (99% CI for the rise in hCG in an IUP), ...

The change in serum hCG over time (hCG ratio) and progesterone levels can be used to predict failing PULs. Mathematical models to predict PUL outcome have been developed but need to be tested in ...

If the serum hCG level is positive, transvaginal ultrasound will be performed 2 weeks later to determine the pregnancy location and confirm foetal viability. Subsequent management will be the same as ...

LH can cross-react with some assays for hCG. Administration of supplemental testosterone reduces the release of gonadotropin-releasing hormone and consequently suppresses pituitary production of LH ...