Luteal Phase · Corpus Luteum Function
Timing luteal urinary pregnanediol glucuronide assessment using urinary luteinizing hormone: agreement with ultrasound-determined ovulation
Leiva R et al., 2026 Preprint
18 works
Rene Leiva
Assistant Professor, Family Medicine, University of Ottawa
Regularly publishes research on Menstrual Cycle Hormones, Progesterone, and Corpus Luteum Function.
Subjects
18 works
Cycle Biomarkers · Hormonal Markers
Menstrual Cycle Heat Maps: Visualising menstrual cycle variability using hormone heat map arrays referenced to the ultrasound day of ovulation
Bouchard T et al., 2025
Cycle Physiology · Hormonal Regulation
Early menstrual cycle impacts of oestrogen and progesterone on the timing of the fertile window
Ecochard R et al., 2024
Technology · Cycle Tracking Apps
Helping Patients to Predict and Confirm Ovulation with the Use of Combined Urinary Hormonal and Smartphone Technology: A Proof-of-Concept Retrospective Descriptive Case Series
Leiva R et al., 2024
Cycle Physiology · Cycle Variability
The menstrual cycle is influenced by weekly and lunar rhythms
Ecochard R et al., 2024
Luteal Phase · Corpus Luteum Function
Distinct urinary progesterone metabolite profiles during the luteal phase
Abdullah S et al., 2023
Ovarian Hormones · Progesterone
Descriptive analysis of the relationship between progesterone and basal body temperature across the menstrual cycle
Écochard R et al., 2022
Biomarkers · Urinary Hormone Monitoring
Pilot observational prospective cohort study on the use of a novel home-based urinary pregnanediol 3-glucuronide (PDG) test to confirm ovulation when used as adjunct to fertility awareness methods (FAMs) stage 1
Leiva R et al., 2019
Ovarian Hormones · Progesterone
A Quadriparametric Model to Describe the Diversity of Waves Applied to Hormonal Data
Abdullah S et al., 2018
Cycle Biomarkers · Hormonal Markers
Hormonal Predictors of Abnormal Luteal Phases in Normally Cycling Women
Abdulla SH et al., 2018
Luteal Phase · Corpus Luteum Function
Characterization of hormonal profiles during the luteal phase in regularly menstruating women
Ecochard R et al., 2017
The use of beta-binomial distributions to describe hormone profiles in the normal menstrual cycle
Abdulla S et al., 2017 Conference presentation
Biomarkers · Urinary Hormone Monitoring
Urinary Luteinizing Hormone Tests: Which Concentration Threshold Best Predicts Ovulation?
Leiva RA et al., 2017
Ovulation Physiology · Anovulation
Random serum progesterone threshold to confirm ovulation
Leiva R et al., 2015
Effectiveness · Fertile Window Estimation
Self-identification of the clinical fertile window and the ovulation period
Ecochard R et al., 2015
Ovarian Hormones · Progesterone
Characterization of follicle stimulating hormone profiles in normal ovulating women
Ecochard R et al., 2014
Effectiveness · Comparative Effectiveness
Use of ovulation predictor kits as adjuncts when using fertility awareness methods (FAMs): a pilot study
Leiva R et al., 2014
Ovulation Physiology · Anovulation
Use of urinary pregnanediol 3-glucuronide to confirm ovulation
Ecochard R et al., 2013
