l Ovulation monitoring
Blood progesterone levels >5ng/ml suggest ovulation.
l Evaluation of luteal function
Evaluation of luteal function: A lower than physiological blood progesterone level during the luteal phase is indicative of luteal insufficiency.
l Ancillary diagnosis of ectopic pregnancy
In ectopic pregnancy, blood progesterone levels is very low, most patients < 15ng/ml.
Aids in the diagnosis of pre-eclampsia, observation of placental function, prognostic assessment of in vitro fertilisation-embryo transfer, etc.