PATHOLOGY

Detailed explanation-1: -Thyroid hormone has the longest half-life, approximated to be days. Thyroxine, among many other things, regulates your metabolic activity, mood, and temperature.

Detailed explanation-2: -Human chorionic gonadotropin hormone (hCG). This hormone is only made during pregnancy.

Detailed explanation-3: -In general, peptide hormones have shorter half-lives than steroid and thyroid hormones.

Detailed explanation-4: -What is progesterone? Progesterone belongs to a group of steroid hormones called progestogens. It is mainly secreted by the corpus luteum in the ovary during the second half of the menstrual cycle. It plays important role in the menstrual cycle and in maintaining the early stages of pregnancy.