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ClinicalTrials.gov public records Last synced Oct 18, 2026, 1:50 AM EDT

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Showing 193–216 of 1,554 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Blood Sampling Clear all
Completed No phase listed Observational Accepts healthy volunteers

Research Study on the Effects of Smoking on Arteries

NCT00948454
View directory record Official record
Conditions
Smoking
Interventions
Not listed
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2006
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 27, 2009 · Synced Oct 18, 2026, 1:50 AM EDT
Completed Early Phase 1 Interventional Results available

Transgender Estradiol

NCT04036500
View directory record Official record
Conditions
Transgender Persons
Interventions
Estradiol
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 11, 2025 · Synced Oct 18, 2026, 1:50 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Time of Postpartum Hemoglobin Assessment and Blood Loss During Delivery

NCT03233607
View directory record Official record
Conditions
Hemorrhage, Postpartum
Interventions
Blood Draw
Procedure
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 24, 2019 · Synced Oct 18, 2026, 1:50 AM EDT
Recruiting No phase listed Observational

Accurate Point of Care Liver Disease Diagnostics (Phase 2)

NCT07518784
View directory record Official record
Conditions
MASLD, MASLD (Metabolic Dysfunction-Associated Steatotic Liver Disease), NAFLD, NAFLD (Nonalcoholic Fatty Liver Disease)
Interventions
LiverScope® exam, MR exam, Blood draw, Body measurements, Questionnaire
Diagnostic Test · Other
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Apr 9, 2026 · Synced Oct 18, 2026, 1:50 AM EDT
Terminated No phase listed Observational

Use Peripheral Blood Proteomics to Predict the Treatment Response and Toxicities in NSCLC Immunotherapy

NCT03951012
View directory record Official record
Conditions
Non Small Cell Lung Cancer
Interventions
Blood draw
Procedure
Lead sponsor
Muhammad Furqan
Other
Eligibility
18 Years to 100 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Oct 12, 2023 · Synced Oct 18, 2026, 1:50 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetics of Tenofovir, Emtricitabine, Maraviroc, and Raltegravir in Cervical, Vaginal, and Rectal Tissues and Secretions

NCT01330199
View directory record Official record
Conditions
Healthy Adult Females
Interventions
Pharmacokinetic Sampling
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 49 Years · Female only
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 17, 2013 · Synced Oct 18, 2026, 1:50 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

SpO2 Accuracy Comparison of Smart Sock V. 2 SpO2 to Arterial Blood CO-Oximetry

NCT03630016
View directory record Official record
Conditions
Hypoxia
Interventions
Pulse oximetry with Owlet BabySat v1.0 sensor
Diagnostic Test
Lead sponsor
Owlet Baby Care, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Lehi, Utah
Source: ClinicalTrials.gov public record
Updated Jul 23, 2019 · Synced Oct 18, 2026, 1:50 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Drug-Drug Interaction Study With AZD9291 and Omeprazole in Healthy Volunteers

NCT02224053
View directory record Official record
Conditions
Healthy Volunteer
Interventions
Pharmacokinetic sampling - AZD9291, AZD9291 tablet dosing, Omeprazole tablet dosing, Pharmacokinetic sampling - AZ5140 and AZ7550
Procedure · Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
136 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
2
States / cities
Overland Park, Kansas • Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 24, 2016 · Synced Oct 18, 2026, 1:50 AM EDT
Recruiting Not applicable Interventional

WATCH (Wearable Artificial inTelligence for Cardiac Function and Health Monitoring)

NCT07058064
View directory record Official record
Conditions
Lymphoma, Sarcoma
Interventions
Electrocardiogram, Echocardiogram, LVEF echocardiogram, Apple Watch, Biospecimen collection, Questionnaires, Cardio-pulmonary exercise test, 6 minute walk test, Grip strength test
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 15, 2025 · Synced Oct 18, 2026, 1:50 AM EDT
Not yet recruiting Not applicable Interventional

Understanding the Effects of Pulmonary Arterial Hypertension on Lean Muscle Mass-Substudy

NCT07781709
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Measurement of oxyhemoglobin and deoxyhemoglobin concentration pre and post- exercise at baseline and Week 12. Measurement of time to recovery of oxyhemglobin post-exercise at baseline and at Week 12., Blood draw
Device · Diagnostic Test
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 18, 2026, 1:50 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Effects of Metformin in a Non-Diabetic Patient Population

NCT03772964
View directory record Official record
Conditions
Inflammatory Response
Interventions
MetFORMIN Hydrochloride ER, Placebo
Drug
Lead sponsor
Brian Zuckerbraun
Other
Eligibility
55 Years to 85 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 11, 2023 · Synced Oct 18, 2026, 1:50 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Exogenous Ketones on Indices of Keto-Adaptation in Obese Subjects on Weight Reducing Diets.

NCT06449287
View directory record Official record
Conditions
Ketogenic Diet, Weight Loss
Interventions
Diet, Blood Draw, Ketone/Glucose Monitoring, Body Composition, Urine Analysis, Neuropsychological Measures - ANAM
Other · Biological · Behavioral
Lead sponsor
Ohio State University
Other
Eligibility
21 Years to 65 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 19, 2024 · Synced Oct 18, 2026, 1:50 AM EDT
Completed Not applicable Interventional Results available

Home-based Therapeutic Drug Monitoring in Kidney Transplantation

NCT05005221
View directory record Official record
Conditions
Kidney Transplant
Interventions
Automated text messages
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 99 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 27, 2025 · Synced Oct 18, 2026, 1:50 AM EDT
Completed Not applicable Interventional

Use of MCT Oil for Enhancement of Weight Loss in Obese Patients

NCT00207272
View directory record Official record
Conditions
Obesity, Weight Loss
Interventions
1170-1870 kcal/day liquid diet, Gastric bypass surgery, Biopsy.visceral adipose tissue, Biopsy.omental adipose tissue, Biopsy. subcutaneous abdominal adipose tissue, Blood sample
Behavioral · Procedure
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 26, 2008 · Synced Oct 18, 2026, 1:50 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Mechanisms of Immunosurveillance for Lung Cancer

NCT01710319
View directory record Official record
Conditions
Lung Cancer
Interventions
blood draw
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
119 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated May 7, 2018 · Synced Oct 18, 2026, 1:50 AM EDT
Active, not recruiting No phase listed Observational

Liquid Biomarker Study in Melanoma and Non-Melanoma Skin Cancers

NCT06608511
View directory record Official record
Conditions
Skin Cancer, Melanoma (Skin Cancer), Basal Cell Carcinoma of Skin, Basal Cell Carcinoma of Skin, Site Unspecified, Cutaneous Squamous Cell Carcinoma (CSCC), Merkel Cell Carcinoma of Skin
Interventions
Blood draw for the laboratory assessment
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 29, 2026 · Synced Oct 18, 2026, 1:50 AM EDT
Completed No phase listed Observational

Pilot Study of Biomarkers and Cardiac MRI as Early Indicators of Cardiac Exposure Following Breast Radiotherapy

NCT02494453
View directory record Official record
Conditions
Breast Cancer
Interventions
Research Cardiac MRI, Biomarkers
Procedure
Lead sponsor
University of Michigan Rogel Cancer Center
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 30, 2019 · Synced Oct 18, 2026, 1:50 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Acute Cryotherapy on Musculoskeletal Function and Biomarkers

NCT07211412
View directory record Official record
Conditions
Exercise Induced Muscle Damage, Cryotherapy
Interventions
Cryotherapy, Eccentric exercise-induced muscle damage
Other
Lead sponsor
University of Texas, El Paso
Other
Eligibility
18 Years to 30 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated Oct 8, 2025 · Synced Oct 18, 2026, 1:50 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Blood Collection In Healthy Adult Volunteers To Obtain Serum For Use In Serum Bactericidal Activity Assay Development

NCT00401232
View directory record Official record
Conditions
Healthy Subjects
Interventions
Blood Collection
Procedure
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 64 Years
Enrollment
955 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2017
U.S. locations
2
States / cities
Baltimore, Maryland • Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Mar 19, 2018 · Synced Oct 18, 2026, 1:50 AM EDT
Recruiting No phase listed Observational

Blood Specimen Collection For Laboratory Assay Research

NCT06046651
View directory record Official record
Conditions
General; Metabolic Disorder, Sexual Dysfunction, Hair Loss, Pathology
Interventions
Not listed
Lead sponsor
Roman Health Ventures Inc.
Industry
Eligibility
18 Years and older
Enrollment
10,000 participants
Timeline
2023 – 2033
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Oct 18, 2026, 1:50 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Ghrelin Levels in Pancreatic Cancer Patients

NCT00225745
View directory record Official record
Conditions
Pancreatic Cancer
Interventions
Blood draw
Procedure
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2015
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Oct 14, 2015 · Synced Oct 18, 2026, 1:50 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

MDSC Clinical Assay in Finding and Monitoring Cancer Cells in Blood and Urine Samples From Patients With or Without Localized or Metastatic Bladder Cancer

NCT02735512
View directory record Official record
Conditions
No Evidence of Disease, Stage II Bladder Cancer, Stage III Bladder Cancer, Stage IVA Bladder Cancer, Stage IVB Bladder Cancer
Interventions
Cytology Specimen Collection Procedure, Laboratory Biomarker Analysis
Other
Lead sponsor
University of Southern California
Other
Eligibility
Not listed
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 10, 2022 · Synced Oct 18, 2026, 1:50 AM EDT
Completed No phase listed Observational

Liver Fibrosis in Alpha-1 Antitrypsin Deficiency (Liver AATD)

NCT01810458
View directory record Official record
Conditions
Liver Fibrosis, Alpha-1 Antitrypsin Deficiency, AAT Deficiency, AATD
Interventions
Abdominal ultrasound, History and physical, Intravenous catheter, Blood draw, Liver questionnaire, Liver Biopsy, Midazolam, Fentanyl, Lidocaine, Acetaminophen, Lorazepam, Oxycodone/Acetaminophen, Ondansetron
Device · Procedure · Other + 1 more
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 70 Years
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 21, 2023 · Synced Oct 18, 2026, 1:50 AM EDT
Withdrawn Phase 4 Interventional

Study Evaluating Inhibitor Specificity in Hemophilia A

NCT00151385
View directory record Official record
Conditions
Hemophilia A
Interventions
single blood draw
Procedure
Lead sponsor
Wyeth is now a wholly owned subsidiary of Pfizer
Industry
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
7
States / cities
Atlanta, Georgia • Detroit, Michigan • New Hyde Park, New York + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2012 · Synced Oct 18, 2026, 1:50 AM EDT