# Impact of Serum Progesterone in Modified Natural Cycles and Stimulated Cycles on Ongoing Pregnancy Rate

> **NCT04259996** · — · COMPLETED · sponsor: **Instituto Valenciano de Infertilidad, IVI VALENCIA** · enrollment: 488 (actual)

## Conditions studied

- Infertility, Female

## Interventions

- **PROCEDURE:** PROGESTERONE AND ESTRADIOL SERUM CONCENTRATION MEASUREMENT

## Key facts

- **NCT ID:** NCT04259996
- **Lead sponsor:** Instituto Valenciano de Infertilidad, IVI VALENCIA
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2020-02-19
- **Primary completion:** 2022-07-25
- **Final completion:** 2023-07-01
- **Target enrollment:** 488 (ACTUAL)
- **Last updated:** 2023-10-24


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04259996

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04259996, "Impact of Serum Progesterone in Modified Natural Cycles and Stimulated Cycles on Ongoing Pregnancy Rate". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT04259996. Licensed CC0.

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