Bundle – Estradiol + Progesterone (SAVE 20%!)

Estradiol (E2) is the most potent natural estrogen and circulates in plasma predominantly in a protein-bound form. In non-pregnant women, E2 is produced mainly by the ovaries. In men,the testes and androgen precursors are the principal source.

Progesterone is an important female sex hormone. Progesterone levels are normally elevated during the reproductive period of a woman’s life and become lower during menopause.