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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Oral glucose tolerance test Clear all
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 16, 2024 · Synced Sep 29, 2026, 2:12 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Fluid Milk in Attenuating Hyperglycemia and Hypertriglyceridemia After Meal

NCT02894112
View directory record Official record
Conditions
Oral Glucose Tolerance Test, High Fat Tolerance Test
Interventions
non-fat milk, carbohydrate control beverage, caloric control beverage
Dietary Supplement
Lead sponsor
University of Texas at Austin
Other
Eligibility
20 Years to 40 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Sep 8, 2016 · Synced Sep 29, 2026, 2:12 PM EDT
Completed Not applicable Interventional Results available

Impact of Inflammation on Reward Circuits, Motivational Deficits and Negative Symptoms in Schizophrenia

NCT03818516
View directory record Official record
Conditions
Schizophrenia
Interventions
Oral Glucose Tolerance Test (OGTT)
Other
Lead sponsor
Emory University
Other
Eligibility
18 Years to 59 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
6
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated May 1, 2024 · Synced Sep 29, 2026, 2:12 PM EDT
Completed Not applicable Interventional

EnVision CF Multicenter Study of Glucose Tolerance in Cystic Fibrosis

NCT03650712
View directory record Official record
Conditions
Cystic Fibrosis-related Diabetes
Interventions
Oral glucose tolerance test, Continuous glucose monitoring, Dexa scan
Diagnostic Test
Lead sponsor
Katie Larson Ode
Other
Eligibility
6 Years and older
Enrollment
317 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
4
States / cities
Aurora, Colorado • Iowa City, Iowa • Minneapolis, Minnesota + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 23, 2024 · Synced Sep 29, 2026, 2:12 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

NAUTICAL: Effect of Natriuretic Peptide Augmentation on Cardiometabolic Health in Black Individuals

NCT04055428
View directory record Official record
Conditions
Diabetes Mellitus, Cardiovascular Diseases, Insulin Sensitivity/Resistance, Metabolic Disease, Natriuretic Peptides, Metabolism, Energy Expenditure
Interventions
Sacubitril, Valsartan 97-103 mg Oral Tablet, Valsartan 160 mg, Intravenous Glucose Tolerance Test, Standardized Meals, Exercise capacity VO2 maximum determination
Drug · Other · Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jul 27, 2026 · Synced Sep 29, 2026, 2:12 PM EDT
Completed Phase 2 Interventional

Chromium Effects on Insulin and Vascular Function in People at Risk for Diabetes

NCT00067626
View directory record Official record
Conditions
Obesity, Pre-diabetes, Insulin Resistance, Impaired Glucose Tolerance, Impaired Fasting Glucose
Interventions
Chromium
Dietary Supplement
Lead sponsor
Griffin Hospital
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Derby, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 14, 2010 · Synced Sep 29, 2026, 2:12 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Vitamin D Deficiency and Vitamin D Supplementation on Glucose Metabolism

NCT00749918
View directory record Official record
Conditions
Prediabetes, Vitamin D Deficiency
Interventions
Cholecalciferol (vitamin D3)
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 19, 2008 · Synced Sep 29, 2026, 2:12 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Influence of Lifestyle Factors on Neutrophil Migration Pilot Study

NCT02411318
View directory record Official record
Conditions
Neutrophil Chemotactic Response
Interventions
Exercise, ProLab 200mg caffeine capsule, Ethanol ingestion, Glucose Tolerance Drink
Behavioral · Drug · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
21 Years to 60 Years
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 16, 2020 · Synced Sep 29, 2026, 2:12 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Study of Brain Function in Women With Insulin Resistant Polycystic Ovary Syndrome

NCT00670800
View directory record Official record
Conditions
Polycystic Ovary Syndrome
Interventions
Metformin
Drug
Lead sponsor
University of Michigan
Other
Eligibility
21 Years to 40 Years · Female only
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 20, 2014 · Synced Sep 29, 2026, 2:12 PM 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 25, 2018 · Synced Sep 29, 2026, 2:12 PM EDT
Recruiting Not applicable Interventional

Early Detection of Gestational Diabetes Mellitus in Pregnancy

NCT05388643
View directory record Official record
Conditions
Gestational Diabetes Mellitus in Pregnancy, Pregnancy, High Risk
Interventions
Enhanced First Trimester GDM Screening, Routine Gestational Diabetes Screening
Diagnostic Test
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years and older · Female only
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 5, 2026 · Synced Sep 29, 2026, 2:12 PM EDT
Completed Not applicable Interventional

CGM Dynamic Index for Predicting Prediabetes in Cystic Fibrosis

NCT06642610
View directory record Official record
Conditions
Prediabetes, Cystic Fibrosis (CF), Cystic Fibrosis-related Diabetes
Interventions
CGM Dynamic Index (CDI)
Device
Lead sponsor
Indiana University
Other
Eligibility
12 Years to 55 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Sep 29, 2026, 2:12 PM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Epigenetic Modifications of Diabetes Mellitus Type I

NCT01623388
View directory record Official record
Conditions
Type I Diabetes
Interventions
Oral glucose tolerance test for Phase I
Procedure
Lead sponsor
Scripps Translational Science Institute
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2013
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 8, 2014 · Synced Sep 29, 2026, 2:12 PM EDT
Completed Phase 2 Interventional Results available

Treating Nonalcoholic Steatohepatitis (NASH) With Metformin

NCT00063232
View directory record Official record
Conditions
Hepatitis
Interventions
Metformin
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 19, 2011 · Synced Sep 29, 2026, 2:12 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparing the Effects of Exercise on the Structure and Function of Fat Tissue

NCT05328570
View directory record Official record
Conditions
Adiposity
Interventions
Oral Glucose Tolerance Test
Diagnostic Test
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 40 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 28, 2025 · Synced Sep 29, 2026, 2:12 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Stable Isotopes- Adults With Obesity

NCT07020741
View directory record Official record
Conditions
Obese Patients (BMI ≥ 30 kg/m²), Glucose Metabolism, Protein Metabolism
Interventions
Indispensable Amino Acid Oxidation, Stable Isotope Oral Glucose Tolerance Test
Procedure
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
19 Years to 59 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 29, 2026, 2:12 PM 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 18, 2024 · Synced Sep 29, 2026, 2:12 PM EDT
Completed Not applicable Interventional

Self-Administered 2-Hour Oral Glucose Tolerance Test

NCT06099509
View directory record Official record
Conditions
Gestational Diabetes, Postpartum Disorder, Gestational Diabetes Mellitus in Pregnancy
Interventions
Self-administered oral glucose tolerance test
Other
Lead sponsor
Prisma Health-Upstate
Other
Eligibility
18 Years and older · Female only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Greenville, South Carolina
Source: ClinicalTrials.gov public record
Updated Jul 1, 2025 · Synced Sep 29, 2026, 2:12 PM 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 3, 2020 · Synced Sep 29, 2026, 2:12 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Role of Immune System in Obesity-related Inflammation and Cardiometabolic Risk

NCT01104220
View directory record Official record
Conditions
Non-alcoholic Fatty Liver Disease, Metabolic Syndrome, Metabolically Abnormal Obesity, Metabolically Normal Obesity, Obesity
Interventions
Weight loss
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 90 Years
Enrollment
144 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 22, 2025 · Synced Sep 29, 2026, 2:12 PM EDT
Completed Not applicable Interventional Results available

Vitamin D in Minorities With Prediabetes

NCT00876928
View directory record Official record
Conditions
Pre-diabetes
Interventions
vitamin D, placebo
Drug
Lead sponsor
Charles Drew University of Medicine and Science
Other
Eligibility
18 Years to 90 Years
Enrollment
117 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 13, 2013 · Synced Sep 29, 2026, 2:12 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Evaluation of Kisspeptin Glucose-Stimulated Insulin Secretion With Oral Glucose Tolerance Test

NCT04958109
View directory record Official record
Conditions
Metabolic Diseases
Interventions
Oral Glucose Tolerance Test, Kisspeptin, Placebo
Diagnostic Test · Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 5, 2026 · Synced Sep 29, 2026, 2:12 PM EDT
Completed Phase 4 Interventional Results available

Acute Effect of Exenatide on Brain Glucose Metabolism

NCT01588418
View directory record Official record
Conditions
Impaired Glucose Tolerance (IGT), Diabetes
Interventions
Exenatide, Placebo
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
18 Years to 65 Years · Male only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Nov 23, 2017 · Synced Sep 29, 2026, 2:12 PM 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 3, 2020 · Synced Sep 29, 2026, 2:12 PM EDT