# Menstrual Cycle Study

> **NCT05999123** · — · COMPLETED · sponsor: **Fitbit LLC** · enrollment: 143 (actual)

## Conditions studied

- Menstruation
- Ovulation

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT05999123
- **Lead sponsor:** Fitbit LLC
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2023-07-25
- **Primary completion:** 2024-08-30
- **Final completion:** 2024-08-30
- **Target enrollment:** 143 (ACTUAL)
- **Last updated:** 2024-12-20


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05999123

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05999123, "Menstrual Cycle Study". Retrieved via AI Analytics 2026-07-26 from https://api.ai-analytics.org/clinical/NCT05999123. Licensed CC0.

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