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ClinicalTrials.gov public records Last synced Oct 5, 2026, 7:34 AM EDT

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Showing 25–48 of 145 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Oral glucose tolerance testing (OGTT) Clear all
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of 4 Weeks of L-Citrulline Supplementation on Macro- and Microvascular Function in Type 2 Diabetes

NCT06016478
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
L-citrulline, Placebo
Dietary Supplement
Lead sponsor
Texas Tech University
Other
Eligibility
40 Years to 75 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated May 15, 2025 · Synced Oct 5, 2026, 7:34 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Phenotyping Genetic Risk for Type 2 Diabetes

NCT04024631
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Genetics
Interventions
75g glucose beverage (Glucola, Trutol, or similar brand), DXA, whole body
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
10 Years to 70 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2027
U.S. locations
2
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Oct 5, 2026, 7:34 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effects of Gender-Affirming Hormone Therapy Among Transgender Women

NCT04128488
View directory record Official record
Conditions
Transgender Women, HIV/AIDS, Cardiovascular Diseases, Metabolic Disease, Coagulopathy
Interventions
Abdominal MR Imaging, Cardiac MRI/MRS, Oral Glucose Tolerance Testing, Whole Body, Lumbar Spine, and Hip DEXA Imaging
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
16 Years to 99 Years · Male only
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 18, 2025 · Synced Oct 5, 2026, 7:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Modulating Glucose Tolerance With Dietary Tyrosine

NCT03872557
View directory record Official record
Conditions
Glucose Tolerance
Interventions
Tyrosine (TYR) Supplementation
Dietary Supplement
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 5, 2021 · Synced Oct 5, 2026, 7:34 AM EDT
Completed No phase listed Observational

Glycemic Characterization and Pancreatic Imaging Correlates in Cystic Fibrosis

NCT03961516
View directory record Official record
Conditions
Cystic Fibrosis, Cystic Fibrosis-related Diabetes, Cystic Fibrosis Liver Disease, Pancreatic Steatosis, Hepatic Steatosis
Interventions
Frequently Sampled Oral Glucose Tolerance Test and CGM, MRI Pancreas and Liver
Device · Radiation
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
6 Years to 40 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated May 20, 2022 · Synced Oct 5, 2026, 7:34 AM EDT
Completed No phase listed Observational

Study of Pregnancy Regulation of Insulin and Glucose

NCT02763267
View directory record Official record
Conditions
Gestational Diabetes Mellitus
Interventions
Oral glucose tolerance test
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
234 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 10, 2022 · Synced Oct 5, 2026, 7:34 AM EDT
Terminated Phase 4 Interventional Results available

Renin-Angiotensin and Fibrinolysis in Humans: Effect of Long-Term PDE5 Inhibition on Glucose Homeostasis

NCT01409993
View directory record Official record
Conditions
Impaired Glucose Tolerance
Interventions
Sildenafil, Placebo, Hyperglycemic clamp, Euglycemic clamp
Drug · Diagnostic Test
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 17, 2017 · Synced Oct 5, 2026, 7:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study of the Reversibility of Glucose Intolerance Caused by Chronic Aspartame Consumption

NCT02520258
View directory record Official record
Conditions
Glucose Metabolism Disorder
Interventions
Oral glucose tolerance test (OGTT), Diet soda containing aspartame only
Other
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 45 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 4, 2020 · Synced Oct 5, 2026, 7:34 AM EDT
Completed Not applicable Interventional

Blood Flow Responses to an Oral Glucose Tolerance Test in Type 2 Diabetes

NCT00972452
View directory record Official record
Conditions
Type 2 Diabetes, Insulin Resistance
Interventions
Exercise
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
30 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 24, 2015 · Synced Oct 5, 2026, 7:34 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Common Genetic Variation and Type 2 Diabetes

NCT00707616
View directory record Official record
Conditions
Pre-diabetes
Interventions
Oral glucose tolerance test
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
35 Years to 80 Years
Enrollment
190 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2012
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 23, 2013 · Synced Oct 5, 2026, 7:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Sympathetic Activation in Obesity

NCT04946552
View directory record Official record
Conditions
Obesity, Healthy
Interventions
PET Scan, Mixed Meal Test, Muscle sympathetic nerve activity (MSNA), Oral Glucose Tolerance Test, Body Composition, Percent Body Fat & Percent Body Water (Tanita scale), CT Scan, Body Composition, Percent Body Fat & Percent Body Water (DXA Scan)
Diagnostic Test · Dietary Supplement · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 45 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 16, 2024 · Synced Oct 5, 2026, 7:34 AM EDT
Terminated Not applicable Interventional

The Impact of Time Restricted Eating on Type 2 Diabetes

NCT06887543
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Meal timing, Time restricted eating, Usual feeding pattern.
Other
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 75 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 20, 2026 · Synced Oct 5, 2026, 7:34 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Pathogenesis of the Cardiometabolic Risk in Youth With Type 1 Diabetes

NCT04101045
View directory record Official record
Conditions
Type 1 Diabetes, De Novo Lipogenesis
Interventions
Oral Glucose Tolerance Test
Diagnostic Test
Lead sponsor
Yale University
Other
Eligibility
13 Years to 22 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 13, 2023 · Synced Oct 5, 2026, 7:34 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Single Dose Study Of PF-04171327 And Prednisone On Carbohydrate Metabolism

NCT01199900
View directory record Official record
Conditions
Healthy
Interventions
PF-04171327, Prednisone
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Kalamazoo, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 17, 2010 · Synced Oct 5, 2026, 7:34 AM EDT
Terminated No phase listed Observational

Role of Insulin Action in Psoriasis Pathogenesis

NCT06242847
View directory record Official record
Conditions
Psoriasis, Plaque Psoriasis, Insulin Resistance, PreDiabetes, Overweight and Obesity
Interventions
Oral glucose tolerance test (OGTT), Skin punch biopsy
Diagnostic Test · Procedure
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Oct 5, 2026, 7:34 AM EDT
Withdrawn Not applicable Interventional

Metabolic Abnormalities in Hispanic Children With Cystic Fibrosis

NCT00287443
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Oral Glucose tolerance test, Whole body protein turnover, IV glucose tolerance test, Indirect Calorimetry, Dual Energy X-ray Absorptiometry (DEXA), Growth Hormone Stimulation Test
Procedure
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
7 Years to 17 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Dec 26, 2018 · Synced Oct 5, 2026, 7:34 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Post-Prandial Liver Glucose Metabolism in PCOS

NCT03041129
View directory record Official record
Conditions
Polycystic Ovarian Syndrome, Obesity, Hepatic Steatosis
Interventions
oral glucose tolerance test, MRI of liver
Diagnostic Test
Lead sponsor
University of Colorado, Denver
Other
Eligibility
12 Years to 21 Years · Female only
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 17, 2024 · Synced Oct 5, 2026, 7:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Redox Imbalance and the Development of Cystic Fibrosis Diabetes

NCT02202876
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Cystic Fibrosis
Interventions
Oral Glucose Tolerance Test, High Glycemic Index Meal, Low Glycemic Index Meal, Test Soda, Fruit juice
Other
Lead sponsor
Emory University
Other
Eligibility
1 Year and older
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 4, 2020 · Synced Oct 5, 2026, 7:34 AM EDT
Completed Phase 1Phase 2 Interventional

Metabolic Effects of Non-Nutritive Sweeteners

NCT01200940
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Sucralose, Aspartame, Acesulfame-Potassium, Control
Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
6 Years and older
Enrollment
118 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 22, 2021 · Synced Oct 5, 2026, 7:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Endothelial Function in Obese Adolescents

NCT01879033
View directory record Official record
Conditions
Insulin Resistance, Glucose Intolerance, Obesity, Atherosclerosis
Interventions
Reactive hyperemia peripheral artery tonometry (Rh-PAT), Blood levels for glucose, insulin, lipids and adipocytokines
Other
Lead sponsor
Montefiore Medical Center
Other
Eligibility
12 Years to 18 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jan 22, 2019 · Synced Oct 5, 2026, 7:34 AM EDT
Recruiting Not applicable Interventional

A Randomized Controlled Trial of Diabetes Screening Immediately Postpartum (DIP) and Follow Up PP CARE

NCT05909046
View directory record Official record
Conditions
Pre-Gestational Diabetes, Type2diabetes, Pregnancy in Diabetic, Pregnancy, High Risk, Gestational Diabetes, Gestational Diabetes Mellitus in the Puerperium
Interventions
Immediate inpatient postpartum OGTT, Standard of care 4-12 week postpartum OGTT
Diagnostic Test
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older · Female only
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 5, 2026, 7:34 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Diabetes/ Endocrine Surveillance in SDS

NCT04275479
View directory record Official record
Conditions
Shwachman-Diamond Syndrome
Interventions
Oral Glucose Tolerance Test, Modified Oral Glucose Tolerance Test, Modified Mixed Meal Tolerance Test, Continuous Glucose Monitor, Food Diary, Medical History Questionnaires
Diagnostic Test · Other · Device
Lead sponsor
Washington University School of Medicine
Other
Eligibility
3 Years and older
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 19, 2024 · Synced Oct 5, 2026, 7:34 AM EDT
Terminated Phase 4 Interventional Results available

Effect of Saxagliptin Treatment on Myocardial Fat Content, and Monocyte Inflammation

NCT01548651
View directory record Official record
Conditions
Impaired Glucose Tolerance
Interventions
Saxagliptin, Placebo
Drug
Lead sponsor
Baylor College of Medicine
Other
Eligibility
30 Years to 70 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 13, 2020 · Synced Oct 5, 2026, 7:34 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Routine Validation and Reproducibility Testing of Laboratory Assays and Research Techniques Used for Endocrine, Cardiometabolic, and Musculoskeletal Disorder Research (VALD)

NCT07083557
View directory record Official record
Conditions
Obesity and Obesity-related Medical Conditions, Diabetes, Atherosclerotic Disease, Heart Failure, MASH, Sarcopenia, Osteoporosis, Hyperparathyroidism, Hypoparathyroidism, Ischemic Heart Disease, Cystic Fibrosis (CF), Chronic Kidney Disease(CKD), Osteopenia, Cachexia
Interventions
Endothelial cell collection
Other
Lead sponsor
Bettina Mittendorfer
Other
Eligibility
18 Years to 100 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027 – 2030
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Oct 5, 2026, 7:34 AM EDT