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ClinicalTrials.gov public records Last synced Oct 5, 2026, 2:42 AM EDT

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Showing 73–96 of 167 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Oral Glucose Tolerance Testing 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 5, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Sugar-replacement Sweeteners, and Blood Sugar Control

NCT01128829
View directory record Official record
Conditions
Obesity
Interventions
Water, Sucralose
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
21 Years to 40 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 22, 2014 · Synced Oct 5, 2026, 2:42 AM 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 5, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Mechanisms of Increased Androgen Production Among Women With Polycystic Ovary Syndrome

NCT00989781
View directory record Official record
Conditions
Polycystic Ovary Syndrome
Interventions
3-D Ultrasound, recombinant human chorionic gonadotropin, Recombinant human follicle stimulating hormone, Adrenocorticotropin, Dexamethasone, Glucose
Radiation · Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 37 Years · Female only
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jun 4, 2018 · Synced Oct 5, 2026, 2:42 AM EDT
Completed No phase listed Observational

Pathogenesis of Youth Onset Type 2 Diabetes and Prediabetes

NCT03195400
View directory record Official record
Conditions
IGT - Impaired Glucose Tolerance, T2D
Interventions
Oral Glucose Tolerance Test, Hyperglycemic Clamp, Isoglycemic Intravenous Glucose Test, Hyperinsulinemic Euglycemic Clamp and 2H20
Diagnostic Test
Lead sponsor
Yale University
Other
Eligibility
12 Years to 18 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 23, 2023 · Synced Oct 5, 2026, 2:42 AM 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 2, 2025 · Synced Oct 5, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Hot Water Immersion on Heart Rate Variability and Glucose

NCT06193291
View directory record Official record
Conditions
Glucose Tolerance, HRV
Interventions
Feet heating, Calf heating
Procedure
Lead sponsor
San Diego State University
Other
Eligibility
18 Years to 65 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 8, 2024 · Synced Oct 5, 2026, 2:42 AM 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 5, 2026, 2:42 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

The Diabetes Prevention Trial of Type 1 Diabetes (DPT-1)

NCT00004984
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Parenteral Insulin, Close Observation, Oral Insulin, Placebo
Drug · Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
3 Years to 45 Years
Enrollment
711 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1994 – 2003
U.S. locations
14
States / cities
Los Angeles, California • San Francisco, California • Stanford, California + 10 more
Source: ClinicalTrials.gov public record
Updated Apr 24, 2020 · Synced Oct 5, 2026, 2:42 AM EDT
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 5, 2026, 2:42 AM 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 5, 2026, 2:42 AM EDT
Completed Not applicable Interventional

Supporting Transitions to Primary Care Among Under-resourced, Postpartum Women (STEP-UP)

NCT05852054
View directory record Official record
Conditions
Gestational Diabetes Mellitus, Hypertension in Pregnancy, Dysglycemia
Interventions
OB Provider Clinical Decision Support (CDS), Patient Education (OB Visit), Text messaging, Patient Outreach, Primary Care Provider Clinical Decision Support (CDS), Patient Education (Primary Care Visit)
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Female only
Enrollment
2,306 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
2
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 5, 2026, 2:42 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Fasting Predictors of OGTT and MMTT Response

NCT01998867
View directory record Official record
Conditions
Prediabetes, Hypertension, Obesity, Cardiovascular Disease
Interventions
Not listed
Lead sponsor
Health Diagnostic Laboratory, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 13, 2015 · Synced Oct 5, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cardioprotective Activities Of Whole Eggs On Vascular Endothelial Function In Prediabetic Adults

NCT02364570
View directory record Official record
Conditions
Prediabetes, Cardiovascular Disease
Interventions
Glucose (100g), Glucose (75g), Whole Eggs, Egg Whites, Egg Yolks
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 50 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 3, 2019 · Synced Oct 5, 2026, 2:42 AM 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 9, 2014 · Synced Oct 5, 2026, 2:42 AM EDT
Completed No phase listed Observational

Genetics of Fatty Liver Disease in Children

NCT01966627
View directory record Official record
Conditions
Non Alcoholic Fatty Liver Disease
Interventions
ogtt, genotyping, abdominal and liver magnetic resonance imaging, stool sample, liver biopsy
Other
Lead sponsor
Yale University
Other
Eligibility
7 Years to 18 Years
Enrollment
381 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 8, 2017 · Synced Oct 5, 2026, 2:42 AM 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 5, 2026, 2:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Understanding the Relationship Between Inflammation and Insulin Resistance in the Adipose Tissue

NCT02378077
View directory record Official record
Conditions
Obesity, Insulin Resistance
Interventions
Fat biopsy during scheduled abdominal surgery, Fat Aspiration, Fish Oil Supplement
Procedure · Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
30 Years to 50 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Jan 18, 2020 · Synced Oct 5, 2026, 2:42 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 5, 2026, 2:42 AM 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 5, 2026, 2:42 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Mechanisms Underlying Metabolic Syndrome in Obesity

NCT00579813
View directory record Official record
Conditions
Metabolic Syndrome, Insulin Resistance, Prediabetes
Interventions
Pioglitazone
Drug
Lead sponsor
Philip Kern
Other
Eligibility
18 Years to 65 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2011
U.S. locations
2
States / cities
Little Rock, Arkansas • Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jun 15, 2017 · Synced Oct 5, 2026, 2:42 AM 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 5, 2026, 2:42 AM 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 Oct 2, 2026 · Synced Oct 5, 2026, 2:42 AM EDT
Active, not recruiting No phase listed Observational

Strength and Muscle Related Outcomes for Nutrition and Lung Function in CF

NCT05639556
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
BMI and lean mass index from DXA, Anthropometric Measurements, Hand-grip strength, Six-minute walk Test, Sit-to-Stand Test, Short physical performance battery (SPPB), BIA Sub-study, Accelerometry to assess physical activity, Gastrointestinal (GI) and nutrition questionnaires:, Psychosocial questionnaire: PHQ-8, Psychosocial questionnaire: GAD-7, Psychosocial questionnaire: The Treatment Self-Regulation Questionnaire (TSRQ), Psychosocial questionnaire: CF Fatalism Scale, Psychosocial questionnaire: Body Esteem Scale for Adolescents and Adults (BESAA), 12-month Questionnaire, Oral glucose tolerance testing (OGTT), Continuous glucose monitoring (CGM), Chest CT scans (When available within the past 6 months in medical records), Hologic Dual X-Ray Absorptiometry (DXA), Ultrasound Sub-study of assessment of appendage muscles using ultrasound, Psychosocial questionnaire: Hunger Vital Sign questionnaire, Respiratory symptom questionnaire: CRISS, Spirometry, Psychosocial questionnaire: Additional Health Questionnaire, CF Management Questionnaire, Food Frequency Questionnaire
Diagnostic Test · Other · Device
Lead sponsor
Jaeb Center for Health Research
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
23
States / cities
Tucson, Arizona • Little Rock, Arkansas • Atlanta, Georgia + 19 more
Source: ClinicalTrials.gov public record
Updated Mar 13, 2026 · Synced Oct 5, 2026, 2:42 AM EDT