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ClinicalTrials.gov public records Last synced Oct 10, 2026, 1:02 PM EDT

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Showing 25–48 of 151 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Oral glucose tolerance test (OGTT) Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Vitamin D Supplementation on Oral Glucose Tolerance Among Obese Adolescents

NCT01856946
View directory record Official record
Conditions
Insulin Resistance
Interventions
4,000 IU vitamin D3
Dietary Supplement
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
9 Years to 19 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 10, 2016 · Synced Oct 10, 2026, 1:02 PM 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 10, 2026, 1:02 PM 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 10, 2026, 1:02 PM EDT
Withdrawn Not applicable Interventional

Use of the Insulin Pump in Cystic Fibrosis Patients With Impaired Glucose Tolerance or CFRD and in Type 1 Diabetes Patients.

NCT00287456
View directory record Official record
Conditions
Cystic Fibrosis Related Diabetes
Interventions
Insulin Pump, Insulin, Oral Glucose Tolerance Test, Whole body Protein Turnover
Device · Drug · Procedure
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
12 Years to 32 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jan 10, 2019 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Standing on Glycemia in Prediabetic Adults

NCT01884792
View directory record Official record
Conditions
Prediabetes
Interventions
Sitting OGTT, Standing OGTT, Sitting CGM, Standing CGM
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 15, 2014 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Continuous Glucose Monitors (CGM) for Type 2 Diabetes (T2D) Risk Evaluation

NCT05404711
View directory record Official record
Conditions
Overweight and Obesity, PreDiabetes, Insulin Resistance
Interventions
CGM
Device
Lead sponsor
Mary Ellen Vajravelu, MD
Other
Eligibility
8 Years to 18 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 25, 2024 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Phase 2 Interventional Results available

Ox Bile- Conjugated Bile Acids Sodium in Type II Diabetes Mellitus

NCT02871882
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Obese, Overweight
Interventions
Gastric Emptying test, Mixed Oral Glucose Tolerance test, Conjugated bile acids sodium, Placebo
Radiation · Other · Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 31, 2023 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Snooze Control: Sleep Duration & Glucose Metabolism

NCT02583750
View directory record Official record
Conditions
Glucose Metabolism Disorders
Interventions
OGTT after deprived sleep first, OGTT after sufficient sleep first
Behavioral
Lead sponsor
Xuewen Wang
Other
Eligibility
18 Years to 25 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated Oct 22, 2015 · Synced Oct 10, 2026, 1:02 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 9, 2016 · Synced Oct 10, 2026, 1:02 PM 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 10, 2026, 1:02 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Prevalence of Carbohydrate Intolerance in Lean and Overweight/Obese Children

NCT01967849
View directory record Official record
Conditions
Obesity, Type 2 Diabetes
Interventions
Oral Glucose tolerance test
Diagnostic Test
Lead sponsor
Yale University
Other
Eligibility
7 Years to 21 Years
Enrollment
2,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2023
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 10, 2026, 1:02 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 4, 2020 · Synced Oct 10, 2026, 1:02 PM 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 10, 2026, 1:02 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Composition & Function of Sarcoplasmic Reticulum in Persons With the Metabolic Syndrome

NCT02122666
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
muscle biopsy
Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2024
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 26, 2024 · Synced Oct 10, 2026, 1:02 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Normal-weight Diabetes: Adipocyte-directed Therapy With Pioglitazone or Tirzepatide

NCT06657209
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Diabetes, Type 2 Diabetes, Pre Diabetes
Interventions
Insulin resistance testing, OGTT, Fat biopsy, DXA scan, MRI, 1H-MRS, Tirzepatide, Pioglitazone
Procedure · Radiation · Drug
Lead sponsor
Stanford University
Other
Eligibility
30 Years to 70 Years
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
2
States / cities
Palo Alto, California • Stanford, California
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Insulin Resistance in Adolescents

NCT04089332
View directory record Official record
Conditions
Insulin Resistance
Interventions
Oral Glucose Tolerance Test (OGTT), 3 Tesla MRI, Intravenous Catheter, Cognitive Tests
Other · Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
12 Years to 18 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 5, 2024 · Synced Oct 10, 2026, 1:02 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Identification of Phenotypic Factors That Predict Success for Weight Loss and Long-term Weight Maintenance

NCT02043457
View directory record Official record
Conditions
Obesity
Interventions
phenotyping
Other
Lead sponsor
University of Michigan
Other
Eligibility
15 Years to 75 Years
Enrollment
3,200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2030
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Oct 10, 2026, 1:02 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

The Effect of Hydration Status on Substrate Oxidation at Rest and During Light and Moderate Exercise

NCT07298863
View directory record Official record
Conditions
Hydration Status, Substrate Metabolism During Exercise
Interventions
Part 1 - Exercise Trial, Part 1 - Experimental Trial, Part 2 - Oral Glucose Tolerance Test
Other
Lead sponsor
PepsiCo Global R&D
Industry
Eligibility
18 Years to 35 Years
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Valhalla, New York
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 10, 2026, 1:02 PM 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 10, 2026, 1:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Targeting the Carotid Bodies to Reduce Disease Risk Along the Diabetes Continuum

NCT05219994
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Hyperoxia Exposure, Normoxia Exposure
Other
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 65 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 27, 2023 · Synced Oct 10, 2026, 1:02 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Mechanisms of Cerebrovascular Control

NCT02936687
View directory record Official record
Conditions
Metabolic Syndrome X
Interventions
NOS Inhibition, ET-1 Inhibition, NOS Inhibition Placebo, 3 Tesla MRI, Intravenous Catheter, Oral Glucose Tolerance Test, ET-1 Inhibition Placebo
Drug · Device · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 45 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 18, 2021 · Synced Oct 10, 2026, 1:02 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 26, 2018 · Synced Oct 10, 2026, 1:02 PM 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 10, 2026, 1:02 PM EDT
Terminated Not applicable Interventional

Text-message Reminders to Increase Rates of Postpartum Diabetes Screening in Women With Gestational Diabetes

NCT02013557
View directory record Official record
Conditions
Diabetes, Gestational
Interventions
Text-message reminder
Behavioral
Lead sponsor
University of South Florida
Other
Eligibility
18 Years and older · Female only
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jan 6, 2016 · Synced Oct 10, 2026, 1:02 PM EDT