Progesterone
What it is
Progesterone is a hormone produced primarily after ovulation that prepares the body to support a potential pregnancy and helps regulate the menstrual cycle.
Why it matters
Because progesterone rises and falls predictably across the menstrual cycle, a single result is most meaningful when interpreted with cycle timing in mind. Low progesterone relative to estrogen has been discussed in connection with symptoms like irregular cycles, mood changes, and sleep disruption, and progesterone testing is one way to help confirm whether ovulation is occurring as expected. It's read as part of the broader hormone panel alongside estradiol, FSH, and LH.
Progesterone is one of the markers in Zaro's Signal panel and every tier above it.
This information is for educational purposes and is not a substitute for professional medical advice. Always talk to a physician about your specific results and health history.
← All biomarkers