Who can join
Studies open only to women
These studies list female participants only in their official record. Most other studies accept everyone regardless of sex.
573 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingHealthy volunteersOvernight stay mentioned
The Osteoarthritis Prevention Study
Wake Forest University
- Location
- Boston, MA + 1 other US site
- Eligibility basics
- Ages 50+ · Women only
- RecruitingHealthy volunteersPhase 1
Blackcurrants Modify Gut Microbiota and Reduce Osteoporosis Risk in Postmenopausal Females
University of Connecticut
- Location
- Storrs, CT
- Eligibility basics
- Ages 45–70 · Women only
- RecruitingHealthy volunteersPhase 1/Phase 2
Hyperemesis Gravidarum Risk Reduction With Metformin
University of Southern California
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18–49 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Breathing for Two: Inspiratory Muscle Strength Training for Supporting Healthy Blood Pressure in Pregnancy
University of Arizona
- Location
- Tucson, AZ
- Eligibility basics
- Ages 18–55 · Women only
- RecruitingHealthy volunteersPhase 1
HPV DNA Vaccine Via Electroporation for HPV16 Positive Cervical Neoplasia
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
- Location
- Birmingham, AL + 1 other US site
- Eligibility basics
- Ages 19+ · Women only
- RecruitingHealthy volunteersPhase 1
Hormones, Outcomes, and Pain Pathways in Exercise Study
University of Houston
- Location
- Houston, TX
- Eligibility basics
- Ages 18–60 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Exploring the Effects of an Intravaginal Lactic Acid Gel on the Vaginal Microbiome
Queen's Medical Center
- Location
- Honolulu, HI
- Eligibility basics
- Ages 18–54 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Vascular Effects of High-Salt After Preeclampsia
Anna Stanhewicz, PhD
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersOvernight stay mentioned
Digital vs. Speculum Exams for PPROM
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Any age listed · Women only
- RecruitingHealthy volunteersPhase 1
The Impact of Gestational Diabetes Mellitus on Cerebral Blood Flow and Cerebrovascular Function After Pregnancy
Anna Stanhewicz, PhD
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–50 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Early Neurovascular Adaptations in Aging Women
University of Missouri-Columbia
- Location
- Columbia, MO
- Eligibility basics
- Ages 18–70 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Bone Marrow Derived Stem Cells Mobilization for Treatment of Abnormal Endometrium
Hugh Taylor
- Location
- Orange, CT
- Eligibility basics
- Ages 18–40 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Predictors of Aspirin Failure in Preeclampsia Prevention
Rockefeller University
- Location
- New York, NY
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Sympathetic Vascular Transduction Across the Menopause Transition: Contributing Mechanisms
University of Missouri-Columbia
- Location
- Columbia, MO
- Eligibility basics
- Ages 18–70 · Women only
- RecruitingHealthy volunteersPhase 1
Azithromycin Before Induction
Arrowhead Regional Medical Center
- Location
- Colton, CA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Assess Performance Attributes and Acceptability of Non-medicated Intravaginal Rings Among Sexually Active Women in Atlanta, GA
Population Council
- Location
- Atlanta, GA
- Eligibility basics
- Ages 18–49 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Sensitivity of Angiotensin II Type II Receptors in Women Following Preeclampsia
Anna Stanhewicz, PhD
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Study to Assess Potential Impairments in Estradiol Augmentation of Gonadotropin Secretion in Polycystic Ovary Syndrome
University of Virginia
- Location
- Charlottesville, VA
- Eligibility basics
- Ages 18–30 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Prenatal Aspirin and Postpartum Vascular Function
Anna Stanhewicz, PhD
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–50 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Metformin for the Treatment of Microvascular Dysfunction After Gestational Diabetes
Anna Stanhewicz, PhD
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersPhase 1
Ondansetron Use for Preventing Pruritus in Patients Undergoing Cesarean Section
Wayne State University
- Location
- Detroit, MI
- Eligibility basics
- Ages 18–50 · Women only
- RecruitingHealthy volunteersPhase 1
Maternal Choline Supplementation and Cannabis Use During Pregnancy: Impact on Early Brain Development
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Monoferric for Prenatal Iron Deficiency
Oregon Health and Science University
- Location
- Portland, OR
- Eligibility basics
- Ages 18–65 · Women only
- RecruitingHealthy volunteersPhase 1/Phase 2
Peppermint Oil for the Treatment of Interstitial Cystitis / Bladder Pain Syndrome
University of Louisville
- Location
- Louisville, KY
- Eligibility basics
- Ages 18–65 · Women only
Questions
If I fit this group, will I qualify?
Not necessarily. Age and sex limits are only the first filter. Each study has its own inclusion and exclusion criteria, and the research team decides at screening.
Where do these age and sex limits come from?
From the eligibility section of each study’s official ClinicalTrials.gov record. We don’t infer eligibility from anything else.