Clinical Research Directory

Inclusion Criteria (Case Group): * Pregnant patients receiving prenatal care prior to 17 weeks at NYU Langone Health- Obstetrics \& Gynecology Associates * Age 18-50 years * Singleton viable gestation * Pregnant patients at high risk of preeclampsia: Patients meeting USPSTF recommendation for low-dose aspirin (81 mg/day) prophylaxis for preeclampsia based on clinical risk factors (see below) Inclusion Criteria (Control Group): * Pregnant patients receiving prenatal care prior to 17 weeks at NYU Langone Health- Obstetrics \& Gynecology Associates * Age 18-50 years * Singleton viable gestation * Pregnant patients at low risk of preeclampsia: Patients who do not meet USPSTF recommendation for low-dose aspirin (81 mg/day) prophylaxis for preeclampsia based on clinical risk factors. Exclusion Criteria (Case and Control Group): * Allergy to aspirin * Antithrombotic or antiplatelet therapy * Anemia (hemoglobin \<10 g/dl) or thrombocytopenia (Platelet count \<100,000), or thrombocytosis (Platelet count \>600) * Known hemorrhagic diathesis * Planned delivery outside of NYU