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.
Tracking ovulation by hormone. A surge in LH is what triggers the egg to be released from your ovaries. Using ovulation kits to check LH levels in your urine can help you pinpoint the day of ovulation. Some kits allow you to test daily to determine when you are ovulating. These kits are more expensive than thermometers but may be more convenient and are 99% accurate.