Clinical trial Recruiting at 1 site Early Phase 1 Interventional Ages 18 to 50 Women only

Aspirin Dose and Platelet Changes in Pregnancy

Official title: Aspirin Dosing and Platelet Phenotype in Pregnancy

Run by NYU Langone Health · NCT07525635 · Data updated 2026-11-12

This study tests how different aspirin dosing affects platelet behavior in pregnant people at risk for preeclampsia who are taking 81 mg twice daily.

Quick facts

PhaseEarly Phase 1
Study typeInterventional
Ages18 Years to 50 Years
SexWomen only
Enrollment30 (estimated)
SponsorNYU Langone Health
Academic / other
Locations1 site (New York, New York)
StatusRecruiting
StartedApril 27, 2026
Main results expectedAugust 1, 2027
Study endsFebruary 20, 2028
Registry record updatedMay 18, 2026
Trial IDNCT07525635 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Pregnant individuals under 17 weeks gestation, aged 18-50, at high risk for preeclampsia, with singleton pregnancy and care at NYU Langone Health.

Probably not a fit

Those not at high risk for preeclampsia, with non-singleton pregnancies, or who have contraindications to aspirin may not benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This early-phase study examines platelet phenotypes in pregnant patients at high risk for preeclampsia who are on a standard 81 mg twice-daily aspirin. Blood samples are collected about four weeks after starting aspirin to see how the platelets respond. Eligible participants are adults 18-50, carrying a singleton pregnancy, and receiving care at NYU Langone Health, with aspirin intolerance or certain blood disorders excluding participation. The study is sponsored by NYU Langone Health and conducted at NYU Langone Health in New York.

Why it matters

Potential benefit: If successful, results could clarify how aspirin dosing influences platelet function during pregnancy and help tailor therapy to reduce preeclampsia risk.

How similar studies have gone: Previous research supports aspirin use for preeclampsia risk reduction, but this exact platelet-phenotype dosing study is exploratory.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Pregnant people prior to 17 weeks
* Prenatal care at NYU Langone Health Obstetrics and Gynecology Associates
* Age 18-50 years
* Singleton viable gestation
* Pregnant patients at high risk of preeclampsia: Patients meeting USPSTF recommendation for aspirin prophylaxis for preeclampsia based on clinical risk factors.

Exclusion Criteria:

* Undergoing glucose challenge test (GCT) at time of blood draw
* Allergy or intolerance to aspirin
* Antithrombotic or antiplatelet therapy
* Anemia (hemoglobin \<10 g/dl) or thrombocytopenia (platelet count \<100,000), or thrombocytosis (platelet count \>600,000)
* Known hemorrhagic diathesis
* Planned delivery outside of NYU

Where it's running

  • NYU Langone Health
    New York, New York, United States
    Recruiting

Study contacts

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.