Understanding what an endocrinologist does begins with understanding what the endocrine system is. The endocrine system is a series of glands that produce and secrete hormones that the body uses for a wide range of functions. These control many different bodily functions, including: 1  Respiration.
Most ovulation tests may be used at any time of the day; some suggest testing first thing in the morning, although this is not required. For greater success, test about the same time each day, and reduce your liquid intake for four hours beforehand.
Over-the-counter ovulation tests help provide a sure thing when you donât want to guess or calculate when youâre ovulating. In your body, LH and estrogen levels increase around ovulation. LH, specifically, triggers your body to release an egg, so the surge occurs 1 to 1.5 days before ovulation occurs.