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ClinicalTrials.gov public records Last synced Oct 7, 2026, 7:41 AM EDT

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Showing 97–120 of 172 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Oral Glucose Tolerance Test Clear all
Completed Phase 4 Interventional Accepts healthy volunteers

Effects of Insulin Sensitizers in Subjects With Impaired Glucose Tolerance

NCT00108615
View directory record Official record
Conditions
Glucose Metabolism Disorders, Diabetes
Interventions
Metformin, Pioglitazone, CT scans, Oral glucose tolerance test
Drug · Radiation · Procedure
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
35 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Apr 25, 2008 · Synced Oct 7, 2026, 7:41 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 7, 2026, 7:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Interactions of Human Gut Microbiota With Intestinal Sweet Taste Receptors

NCT03032640
View directory record Official record
Conditions
Obesity
Interventions
Oral Glucose Tolerance Test (OGTT), Assessment of dietary compliance, Stool sampling, Sodium Saccharin, Placebo, Lactisole
Other
Lead sponsor
AdventHealth Translational Research Institute
Other
Eligibility
18 Years to 45 Years
Enrollment
102 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Feb 2, 2023 · Synced Oct 7, 2026, 7:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Prospective Evaluation of Pancreatic Function in Pancreas Transplant Recipients

NCT00571818
View directory record Official record
Conditions
Transplant, Diabetes
Interventions
Oral glucose tolerance test, IV Glucose Tolerance Test
Procedure
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2010
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Oct 10, 2023 · Synced Oct 7, 2026, 7:41 AM EDT
Completed No phase listed Observational Results available

Antihypertensive Medication Exposure as Risk for Impaired Glucose Tolerance: A PEAR Sub-Study

NCT01099397
View directory record Official record
Conditions
Prediabetic State
Interventions
Oral glucose tolerance test
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Apr 3, 2018 · Synced Oct 7, 2026, 7:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Rebreathing-induced Hypoxia and Glucose Levels

NCT05422430
View directory record Official record
Conditions
Hypoxemia
Interventions
Rebreathing-induced hypoxia, Spontaneous breathing
Behavioral
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Oct 7, 2026, 7:41 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Continuous Glucose Monitoring for Various Degrees of Glucose Intolerance

NCT05491954
View directory record Official record
Conditions
Diabetes, Gestational
Interventions
Dexcom G6
Device
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 21, 2022 · Synced Oct 7, 2026, 7:41 AM EDT
Completed Phase 2 Interventional Results available

Effectiveness of Metformin Compared to Insulin in Pregnant Women With Mild Preexisting or Early Gestational Diabetes

NCT00835861
View directory record Official record
Conditions
Non Insulin Dependent Diabetes, Pregnancy
Interventions
Metformin, Insulin
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older · Female only
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 25, 2017 · Synced Oct 7, 2026, 7:41 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Impact of the Metabolic Syndrome on the Incidence of Neuropathy in Obese Subjects

NCT02689661
View directory record Official record
Conditions
Metabolic Syndrome, Obesity, Neuropathy
Interventions
Not listed
Lead sponsor
Brian Callaghan
Other
Eligibility
18 Years and older
Enrollment
177 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2019
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 5, 2020 · Synced Oct 7, 2026, 7:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Aspartame on Appetite, Body Composition and Oral Glucose Tolerance

NCT02999321
View directory record Official record
Conditions
Oral Glucose Tolerance
Interventions
aspartame, water
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 60 Years
Enrollment
93 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Jan 18, 2018 · Synced Oct 7, 2026, 7:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Biomarkers of Increased Free Living Sleep Time

NCT04214184
View directory record Official record
Conditions
Sleep Deprivation, Insufficient Sleep Syndrome, Sleep Wake Disorders
Interventions
Increased sleep duration
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 35 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2025
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Oct 7, 2026, 7:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Sucralose and Lactisole Additions to OGTT in Humans

NCT05900193
View directory record Official record
Conditions
Neat OGTT, OGTT With Added Sucralose, OGTT With Added Lactisole
Interventions
TAS1R2/3 agonist or antagoinst admixture to oral glucose tolerance test
Dietary Supplement
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 70 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 12, 2023 · Synced Oct 7, 2026, 7:41 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Studying Infant Nutrition and Blood Sugar

NCT03524469
View directory record Official record
Conditions
Insulin Resistance, Obesity
Interventions
Not listed
Lead sponsor
University of Rochester
Other
Eligibility
19 Years and older
Enrollment
156 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 31, 2024 · Synced Oct 7, 2026, 7:41 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

The HIV, Adipose Tissue Immunology, and Metabolism Study

NCT04451980
View directory record Official record
Conditions
Hiv, Diabetes Mellitus, Type 2
Interventions
Subcutaneous adipose tissue biopsy, CT scan, Oral glucose tolerance test, Blood collection
Procedure · Radiation · Diagnostic Test
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
172 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Oct 7, 2026, 7:41 AM 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 2, 2024 · Synced Oct 7, 2026, 7:41 AM EDT
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 7, 2026, 7:41 AM 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 21, 2014 · Synced Oct 7, 2026, 7:41 AM EDT
Completed Phase 4 Interventional Results available

Long Term Antihypertensive Exposure and Adverse Metabolic Effects: PEAR Follow-Up Study

NCT01409434
View directory record Official record
Conditions
Drug Induced Hyperglycemia, Secondary Hyperlipidemia
Interventions
Oral Glucose Tolerance Test
Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 75 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Oct 16, 2014 · Synced Oct 7, 2026, 7:41 AM EDT
Completed No phase listed Observational

Glycemic Observation and Metabolic Outcomes in Mothers and Offspring

NCT04860336
View directory record Official record
Conditions
Gestational Diabetes, Pregnancy Related
Interventions
Observational
Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Female only
Enrollment
2,179 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
9
States / cities
New Haven, Connecticut • Honolulu, Hawaii • Chicago, Illinois + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Oct 7, 2026, 7:41 AM 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 6, 2026 · Synced Oct 7, 2026, 7:41 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Brain Health in Youth With Normal Weight, Overweight and Obesity at Risk for Type 2 Diabetes (T2D)

NCT05277558
View directory record Official record
Conditions
Type2 Diabetes, Type 2 Diabetes Mellitus in Obese, Dysglycemia, Microvascular Complications, Brain Structure, Obesity, Childhood, Diabetes in Adolescence, Inflammation, Insulin Resistance, Overweight, Childhood, Cognitive Decline
Interventions
Observational
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
12 Years to 17 Years
Enrollment
117 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
2
States / cities
St Louis, Missouri • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 18, 2025 · Synced Oct 7, 2026, 7:41 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Role of Glucagon In Glucose Control in Cystic Fibrosis Related Diabetes

NCT02398383
View directory record Official record
Conditions
Cystic Fibrosis, Cystic Fibrosis Related Diabetes
Interventions
Oral Glucose Tolerance Test, Mixed Meal Tolerance Test, Hypoglycemic Clamp
Other
Lead sponsor
Yale University
Other
Eligibility
12 Years to 45 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 26, 2020 · Synced Oct 7, 2026, 7:41 AM EDT
Completed Phase 3 Interventional

US Inhaled Insulin Dose Titration Study

NCT00246623
View directory record Official record
Conditions
Diabetes Mellitus, Type 2
Interventions
Exubera (inhaled insulin), 8-point glucose diary (to assess pre- and post prandial glucoses), Meal Tolerance Test, 24-hour continuous glucose monitoring (at select sites), Pulmonary Function Testing, Hypoglycemic Event Monitoring, Laboratory Assessments, Nutritional Counseling and Diabetes Education
Drug · Procedure · Behavioral
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 80 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
16
States / cities
Birmingham, Alabama • Los Angeles, California • New Britain, Connecticut + 13 more
Source: ClinicalTrials.gov public record
Updated Feb 8, 2008 · Synced Oct 7, 2026, 7:41 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 7, 2026, 7:41 AM EDT