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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Blood levels drawn Clear all
Recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Transcutaneous Auricular Vagus Nerve Stimulation (taVNS) on Plasma Insulin Levels

NCT06597149
View directory record Official record
Conditions
Healthy
Interventions
Transcutaneous Auricular Vagus Nerve Stimulation
Device
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 25, 2026, 1:27 AM EDT
Completed No phase listed Observational

Procalcitonin and Brain Natriuretic Peptides in Patients With Chronic Kidney Disease.

NCT03698877
View directory record Official record
Conditions
Kidney Failure, Chronic
Interventions
Brain Natriuretic Protein (BNP) and Procalcitonin (PCT) blood tests
Diagnostic Test
Lead sponsor
The Rogosin Institute
Other
Eligibility
18 Years and older
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 18, 2023 · Synced Sep 25, 2026, 1:27 AM EDT
Terminated Phase 2 Interventional Results available

Vaccine Therapy in Treating Patients With Chronic Phase Chronic Myelogenous Leukemia

NCT00428077
View directory record Official record
Conditions
Leukemia
Interventions
bcr-abl peptide vaccine, reverse transcriptase-polymerase chain reaction
Biological · Genetic
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 1, 2011 · Synced Sep 25, 2026, 1:27 AM EDT
Completed Not applicable Interventional

Acute Normovolemic Hemodilution in Patients Undergoing Cytoreductive Surgery for Advanced Ovarian Cancer

NCT01442051
View directory record Official record
Conditions
Epithelial Ovarian Cancer, Fallopian Tube Cancer, Primary Peritoneal Carcinoma
Interventions
Acute Normovolemic Hemodilution
Procedure
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years to 69 Years · Female only
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2019
U.S. locations
4
States / cities
Basking Ridge, New Jersey • Commack, New York • Harrison, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 4, 2019 · Synced Sep 25, 2026, 1:27 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Breast Artery Calcification (BAC) and Female Cardiovascular Disease

NCT07809932
View directory record Official record
Conditions
Cardiovascular Health Risk Communication, Cardiovascular (CV) Risk, Cardiovascular Disease Prevention
Interventions
Cardiac CT Scan, Bloodwork
Diagnostic Test
Lead sponsor
Northwell Health
Other
Eligibility
55 Years to 65 Years · Female only
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Manhasset, New York
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Sep 25, 2026, 1:27 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Gastric Assessment of Pediatric Patients Undergoing Surgery

NCT05674643
View directory record Official record
Conditions
Fasting, Delayed Gastric Emptying, Aspiration Pneumonia, Respiratory Aspiration of Gastric Content
Interventions
Gastric Ultrasound Baseline Scans, Acetaminophen Absorption Test (AAT), Gastric Ultrasound Serial Scans
Diagnostic Test
Lead sponsor
Boston Children's Hospital
Other
Eligibility
2 Years to 18 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 1, 2026 · Synced Sep 25, 2026, 1:27 AM EDT
Suspended No phase listed Observational

Serum and Synovium Protease Inhibitor Levels in Primary and Secondary Osteoarthritic Joints

NCT01613833
View directory record Official record
Conditions
Osteoarthritis of the Knee
Interventions
Blood Draw, Joint Aspirate Harvest
Procedure
Lead sponsor
Scuderi, Gaetano J., M.D.
Other
Eligibility
19 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Oct 8, 2017 · Synced Sep 25, 2026, 1:27 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Polycystic Ovary Syndrome (PCOS) and Sleep Apnea

NCT00203996
View directory record Official record
Conditions
Polycystic Ovary Syndrome, Obstructive Sleep Apnea
Interventions
continuous positive airway pressure (CPAP), depot leuprolide plus estrogen/progestin replacement, pioglitazone, REM frag, SWS supp
Device · Drug · Procedure
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 40 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2008
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 20, 2023 · Synced Sep 25, 2026, 1:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Metal Ion Levels in Stryker Trident II Tritanium System with Modular Dual Mobility (MDM) Liner, Ceramic Head, and SecurFit Advanced Stems

NCT03433742
View directory record Official record
Conditions
Hip Pain
Interventions
Blood levels drawn
Other
Lead sponsor
Hospital for Special Surgery, New York
Other
Eligibility
21 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 16, 2025 · Synced Sep 25, 2026, 1:27 AM EDT
Completed Not applicable Interventional Results available

Comparison of Rapid Thrombelastography and Conventional Coagulation Testing for Haemostatic Resuscitation in Trauma

NCT01536496
View directory record Official record
Conditions
Acute Coagulopathy
Interventions
Blood product transfusion based on conventional coagulation tests., Blood product transfusion based on rapid thrombelastography (r-TEG) results.
Biological
Lead sponsor
Denver Health and Hospital Authority
Other
Eligibility
18 Years and older
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 7, 2019 · Synced Sep 25, 2026, 1:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Single Cell Genomics of Psoriatic Skin

NCT02929745
View directory record Official record
Conditions
Psoriasis
Interventions
Skin biopsy, Blood draw
Procedure
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 22, 2021 · Synced Sep 25, 2026, 1:27 AM EDT
Completed No phase listed Observational

C-Reactive Protein as a Predictor of Stem Cell Transplant Complications

NCT00179868
View directory record Official record
Conditions
Cancer, Leukemia, Stem Cell Transplantation
Interventions
C-Reactive Protein levels
Behavioral
Lead sponsor
Ann & Robert H Lurie Children's Hospital of Chicago
Other
Eligibility
6 Months to 20 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 5, 2025 · Synced Sep 25, 2026, 1:27 AM EDT
Terminated Not applicable Interventional Results available

The Effect of Lactation on Insulin Sensitivity and Lipolysis in Women

NCT04146909
View directory record Official record
Conditions
GDM, Lactation
Interventions
Hyperinsulinemic-euglycemic clamp
Diagnostic Test
Lead sponsor
Yale University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 14, 2024 · Synced Sep 25, 2026, 1:27 AM EDT
Completed No phase listed Observational

Thrombospondin-1 and Pigmented Epithelium Derived Factor Levels in Patients With Diabetes Mellitus.

NCT01809093
View directory record Official record
Conditions
Diabetes, Diabetes Mellitus
Interventions
Blood draw
Biological
Lead sponsor
MidAtlantic Retina
Other
Eligibility
18 Minutes and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 22, 2017 · Synced Sep 25, 2026, 1:27 AM EDT
Active, not recruiting No phase listed Observational

Strength and Muscle Related Outcomes for Nutrition and Lung Function in CF

NCT05639556
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
BMI and lean mass index from DXA, Anthropometric Measurements, Hand-grip strength, Six-minute walk Test, Sit-to-Stand Test, Short physical performance battery (SPPB), BIA Sub-study, Accelerometry to assess physical activity, Gastrointestinal (GI) and nutrition questionnaires:, Psychosocial questionnaire: PHQ-8, Psychosocial questionnaire: GAD-7, Psychosocial questionnaire: The Treatment Self-Regulation Questionnaire (TSRQ), Psychosocial questionnaire: CF Fatalism Scale, Psychosocial questionnaire: Body Esteem Scale for Adolescents and Adults (BESAA), 12-month Questionnaire, Oral glucose tolerance testing (OGTT), Continuous glucose monitoring (CGM), Chest CT scans (When available within the past 6 months in medical records), Hologic Dual X-Ray Absorptiometry (DXA), Ultrasound Sub-study of assessment of appendage muscles using ultrasound, Psychosocial questionnaire: Hunger Vital Sign questionnaire, Respiratory symptom questionnaire: CRISS, Spirometry, Psychosocial questionnaire: Additional Health Questionnaire, CF Management Questionnaire, Food Frequency Questionnaire
Diagnostic Test · Other · Device
Lead sponsor
Jaeb Center for Health Research
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
23
States / cities
Tucson, Arizona • Little Rock, Arkansas • Atlanta, Georgia + 19 more
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Sep 25, 2026, 1:27 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Beyond Monoamines: The Role of the Nociceptin/Orphanin FQ Receptor in Major Depression

NCT05630963
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Aversive stimuli, PET radiotracer
Device · Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 45 Years
Enrollment
228 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 20, 2025 · Synced Sep 25, 2026, 1:27 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Pilot Feasibility Study of a Novel Non-invasive Device for Diagnosis of Anemia

NCT06159348
View directory record Official record
Conditions
Anemia
Interventions
Anemia Diagnostic Assistant (ADA), Serum hemoglobin
Diagnostic Test
Lead sponsor
University of Utah
Other
Eligibility
17 Years to 70 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 23, 2024 · Synced Sep 25, 2026, 1:27 AM EDT
Completed No phase listed Observational

The Influence of Non-Caloric Artificial Sweeteners on Youth With Type 1 Diabetes

NCT03889522
View directory record Official record
Conditions
Type 1 Diabetes Mellitus
Interventions
Bioelectrical Impedance Analysis, Total Body Dual-energy X-ray Absorptiometry, Blood draw
Diagnostic Test
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
5 Years to 17 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced Sep 25, 2026, 1:27 AM EDT
Completed Phase 4 Interventional Results available

Ictal and Interictal Inflammatory Markers in Migraine

NCT01138150
View directory record Official record
Conditions
Migraine
Interventions
Treximet, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 55 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 5, 2016 · Synced Sep 25, 2026, 1:27 AM EDT
Recruiting No phase listed Observational

Correlation Vitamin D Level to Endocrine Autoimmune Toxicity Due to Immune Checkpoint Inhibitors

NCT04615988
View directory record Official record
Conditions
Thyroid, PD-1, Cancer
Interventions
blood draw and questionnaire completion, questionnaire completion, blood collection
Other
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced Sep 25, 2026, 1:27 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Metformin at the Cellular Level and Dosing for Diabetes Mellitus (DM)

NCT01876992
View directory record Official record
Conditions
Diabetes, Pre-diabetes, Obesity
Interventions
Metformin
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
10 Years to 79 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 25, 2017 · Synced Sep 25, 2026, 1:27 AM EDT
Completed No phase listed Observational Results available

Serum Concentration of Lidocaine After Local Injection During Mohs Micrographic Surgery

NCT00793169
View directory record Official record
Conditions
Basal Cell Carcinoma, Squamous Cell Carcinoma
Interventions
Blood Draw
Procedure
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 75 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 5, 2021 · Synced Sep 25, 2026, 1:27 AM EDT
Terminated No phase listed Observational

The Iron Content of Ferritin in Serum and Urine of Children With High Serum Ferritin Levels

NCT03777904
View directory record Official record
Conditions
Iron Overload
Interventions
Serum Ferritin level, Serum Ferritin iron content, Urine Ferritin level, Urine ferritin iron content
Diagnostic Test
Lead sponsor
University of Utah
Other
Eligibility
1 Year to 17 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 4, 2022 · Synced Sep 25, 2026, 1:27 AM EDT
Completed No phase listed Observational

Heart Failure and a Preserved Ejection Fraction

NCT00586833
View directory record Official record
Conditions
Heart Failure
Interventions
O2 consumption max bike test
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 13, 2010 · Synced Sep 25, 2026, 1:27 AM EDT