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ClinicalTrials.gov public records Last synced Oct 6, 2026, 6:51 PM EDT

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Showing 25–48 of 172 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Oral Glucose Tolerance Test Clear all
Completed No phase listed Observational

Alternate Measures of Glucose During OGTT Testing for CFRD

NCT05568134
View directory record Official record
Conditions
Cystic Fibrosis, Cystic Fibrosis-related Diabetes
Interventions
Oral glucose tolerance test
Diagnostic Test
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
10 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 24, 2025 · Synced Oct 6, 2026, 6:51 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 4, 2020 · Synced Oct 6, 2026, 6:51 PM EDT
Completed Not applicable Interventional

Oral Glucose Tolerance Testing Using Candy for Cystic Fibrosis

NCT04579939
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Candy Glucose Tolerance Test
Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
10 Years to 21 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 20, 2022 · Synced Oct 6, 2026, 6:51 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Single Dose Study Of PF-04308515 And Prednisone On Carbohydrate

NCT01199029
View directory record Official record
Conditions
Healthy
Interventions
PF-04308515, 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 16, 2010 · Synced Oct 6, 2026, 6:51 PM EDT
Completed No phase listed Observational Results available

Gastrointestinal Symptoms in Postural Orthostatic Tachycardia Syndrome

NCT03263819
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
Oral glucose tolerance test
Diagnostic Test
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
26 participants
Timeline
2017 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 8, 2024 · Synced Oct 6, 2026, 6:51 PM EDT
Recruiting No phase listed Observational

Pregnancy and Postpartum CGM in GDM

NCT07174245
View directory record Official record
Conditions
Gestational Diabetes
Interventions
continuous glucose monitor
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 8, 2026 · Synced Oct 6, 2026, 6:51 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Impact of Metformin in Teens With Polycystic Ovary Syndrome (PCOS) on Oral Contraceptive Therapy

NCT00283816
View directory record Official record
Conditions
Polycystic Ovary Syndrome
Interventions
Metformin, Oral Contraceptive Pill, Lifestyle Management Program, Quality of Life Questionnaire, Oral Glucose Tolerance Test, Blood work, Abdominal Ultra Sound, Dual-energy x-ray absorptiometry (DEXA scan), placebo
Drug · Behavioral · Procedure
Lead sponsor
University of Rochester
Other
Eligibility
12 Years to 18 Years · Female only
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated May 15, 2015 · Synced Oct 6, 2026, 6:51 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

AchE Inhibitor and Insulin

NCT03063515
View directory record Official record
Conditions
Diabetes Mellitus
Interventions
Pyridostigmine
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Feb 27, 2019 · Synced Oct 6, 2026, 6:51 PM EDT
Completed Not applicable Interventional

Heat Therapy and Cardiometabolic Health in Obese Women

NCT03644524
View directory record Official record
Conditions
Obesity, Polycystic Ovary Syndrome, Prehypertension, PreDiabetes, Cardiovascular Risk Factor, Metabolic Syndrome
Interventions
Heat therapy
Behavioral
Lead sponsor
University of Oregon
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 23, 2018 · Synced Oct 6, 2026, 6:51 PM EDT
Suspended Not applicable Interventional

Insulin Sensitivity in Men With the Metabolic Syndrome

NCT00433173
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
intravenous glucose tolerance test, testosterone, anastrozole, goserelin acetate implant, aerobic capacity (VO2 Max), MRI, muscle biopsy, measurement of resting metabolic rate (energy expenditure), Dual energy x-ray absorptiometry, Fasting oral glucose tolerance test
Procedure · Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
50 Years to 75 Years · Male only
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
2
States / cities
Baltimore, Maryland • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 2, 2010 · Synced Oct 6, 2026, 6:51 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 6, 2026, 6:51 PM 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 6, 2026, 6:51 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 6, 2026, 6:51 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 17, 2026 · Synced Oct 6, 2026, 6:51 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 6, 2026, 6:51 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 6, 2026, 6:51 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 6, 2026, 6:51 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 20, 2008 · Synced Oct 6, 2026, 6:51 PM EDT
Recruiting No phase listed Observational

Home-based Oral Glucose Tolerance Test for Type 1 Diabetes Screening

NCT07155252
View directory record Official record
Conditions
Type 1 Diabetes
Interventions
GTT@Home
Diagnostic Test
Lead sponsor
Yale University
Other
Eligibility
8 Years to 45 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 6, 2026 · Synced Oct 6, 2026, 6:51 PM EDT
Completed Not applicable Interventional

Atenolol Exposure as Risk for Adverse Metabolic Responses to Beta Blockers

NCT00607347
View directory record Official record
Conditions
Hypertension
Interventions
Glucose
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 20, 2011 · Synced Oct 6, 2026, 6:51 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Role of Pulsatile Insulin Secretion (A Study Investigating the Effects of Partial Pacreatectomy on Glucose Metabolism)

NCT00841867
View directory record Official record
Conditions
Impaired Glucose Tolerance
Interventions
All subjects will undergo a 120 minute Oral Glucose Tolerance Test at study visit 2.
Procedure
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 80 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 17, 2016 · Synced Oct 6, 2026, 6:51 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Association of Insulin Resistance and FGF21 on Cardiac Function in Pediatric Dilated Cardiomyopathy

NCT04222101
View directory record Official record
Conditions
Cardiomyopathy, Dilated, Cardiomyopathy, Hypertrophic, Insulin Resistance
Interventions
Oral glucose tolerance test
Diagnostic Test
Lead sponsor
Le Bonheur Children's Hospital
Other
Eligibility
13 Years to 18 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 20, 2021 · Synced Oct 6, 2026, 6:51 PM 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 6, 2026, 6:51 PM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Characterization of Diabetes Mellitus in Fibrous Dysplasia/McCune-Albright Syndrome

NCT03520153
View directory record Official record
Conditions
McCune-Albright Syndrome, Fibrous Dysplasia, Intraductal Papillary Mucinous Neoplasm, Diabetes Mellitus
Interventions
Hyperinsulinemic Euglycemic Clamp and 2H20, Hyperglycemic Clamp, Oral Glucose Tolerance Test
Procedure · Diagnostic Test
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 4, 2019 · Synced Oct 6, 2026, 6:51 PM EDT