Progesterone (P4) blood degree: The P4 exam measures the quantity of progesterone as part of your blood to find out if ovulation has happened. Ovulation can be a course of action wherein your body releases an egg from an ovary in preparing for sperm to fertilize it. This informative article https://waylonwzqfm.suomiblog.com/helping-the-others-realize-the-advantages-of-what-is-the-most-common-ovulatory-disorder-49832080