FFP 643 | The Problem With the Day 21 Progesterone Test

Lisa examines why the standard day 21 progesterone test may not accurately reflect luteal phase health — especially when ovulation timing hasn't been confirmed. Drawing on a committee opinion from the American Society for Reproductive Medicine, she explores the limitations of spot testing and why menstrual cycle charting offers practitioners a more reliable framework for identifying and addressing short luteal phases. Follow this link to view the full show notes page! This episode is sponsored by Lisa's new book, Real Food for Fertility, co-authored with Lily Nichols! Grab your copy here! 🎧 Would you prefer to listen to the audiobook version of Real Food for Fertility instead? 🎧 Listen here! 💥This episode is also sponsored by FAMM, the Fertility Awareness Mastery MentorshipTM program! Apply now to join our next class! We start on September 10th! 📚Have you grabbed your copy of the Fertility Awareness Mastery Charting Workbook? It is the first fully customizable paper charting workbook of its kind, available in both Fahrenheit and Celsius editions. Click here to grab your copy today 📚 If you haven't grabbed your copy of The Fifth Vital Sign, grab it here! 🎧Would you rather listen to the audiobook version of The Fifth Vital Sign? 🎧 Listen here!