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.
A fertility monitor is another, newer approach to finding a womanâs most fertile time. Based on urine tests, this monitor records a womanâs daily fertility level (low, high, peak). The ovulation predictor kit is another test to use at home. This kit measures LH levels to help women determine the most fertile period.