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ClinicalTrials.gov public records Last synced Oct 30, 2026, 10:22 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 73–96 of 317 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Specimen sampling Clear all
Suspended No phase listed Observational Accepts healthy volunteers

Skin Characteristics of Parents of Food Allergic Pediatric Patients

NCT04198753
View directory record Official record
Conditions
Food Allergy in Children
Interventions
Skin tape stripping, Skin barrier assessment, Blood draw
Diagnostic Test · Device
Lead sponsor
National Jewish Health
Other
Eligibility
18 Years and older
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 13, 2020 · Synced Oct 30, 2026, 10:22 PM EDT
Completed No phase listed Observational

Molecular Features and Pathways in Predicting Drug Resistance in Patients With Metastatic Castration-Resistant Prostate Cancer Receiving Enzalutamide

NCT02228265
View directory record Official record
Conditions
Castration Levels of Testosterone, Castration-Resistant Prostate Carcinoma, Prostate Adenocarcinoma, PSA Progression, Recurrent Prostate Carcinoma, Stage IV Prostate Cancer
Interventions
Cytology Specimen Collection Procedure, Enzalutamide, Laboratory Biomarker Analysis
Other · Drug
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
Male only
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2020
U.S. locations
3
States / cities
Los Angeles, California • San Francisco, California • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 28, 2020 · Synced Oct 30, 2026, 10:22 PM EDT
Completed No phase listed Observational

Effects of Chemotherapy on Intestinal Bacteria in Patients With Newly Diagnosed Breast Cancer

NCT02370277
View directory record Official record
Conditions
Ductal Breast Carcinoma In Situ, Invasive Breast Carcinoma, Stage I Breast Cancer, Stage IIA Breast Cancer, Stage IIB Breast Cancer, Stage IIIA Breast Cancer
Interventions
Cytology Specimen Collection Procedure, Laboratory Biomarker Analysis, Questionnaire Administration
Other
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older · Female only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 18, 2019 · Synced Oct 30, 2026, 10:22 PM EDT
Completed No phase listed Observational

DNA Biomarkers in Tissue Samples From Patients With Osteosarcoma

NCT01190943
View directory record Official record
Conditions
Localized Osteosarcoma, Metastatic Osteosarcoma, Recurrent Osteosarcoma
Interventions
Laboratory Biomarker Analysis
Other
Lead sponsor
Children's Oncology Group
Network
Eligibility
Not listed
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2010
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 28, 2022 · Synced Oct 30, 2026, 10:22 PM EDT
Completed No phase listed Observational

Sex Hormone Therapy and Mucosal Tissues

NCT02983110
View directory record Official record
Conditions
Hiv
Interventions
Anoscopy with Rectal Tissue Sampling, Phlebotomy, Female Genital Tract Sampling
Procedure
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 6, 2018 · Synced Oct 30, 2026, 10:22 PM EDT
Completed No phase listed Observational

Collecting and Storing Samples of Bone Marrow and Blood From Patients With Relapsed Acute Lymphoblastic Leukemia or Non-Hodgkin Lymphoma

NCT00897325
View directory record Official record
Conditions
Recurrent Adult Acute Lymphoblastic Leukemia, Recurrent Adult Non-Hodgkin Lymphoma, Recurrent Childhood Acute Lymphoblastic Leukemia, Recurrent Childhood Non-Hodgkin Lymphoma
Interventions
Cytology Specimen Collection Procedure, Laboratory Biomarker Analysis
Other
Lead sponsor
Children's Oncology Group
Network
Eligibility
Up to 30 Years
Enrollment
811 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2019
U.S. locations
168
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 119 more
Source: ClinicalTrials.gov public record
Updated Jan 18, 2020 · Synced Oct 30, 2026, 10:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Clinical Outcomes of a Nationwide, Naturalistic E-Cig Trial (CONNECT)

NCT03453385
View directory record Official record
Conditions
Smoking, Tobacco Use
Interventions
Electronic Cigarette
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
638 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Sep 11, 2023 · Synced Oct 30, 2026, 10:22 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

The Long-term Antibody Persistence of GSK Biologicals' Meningococcal Vaccine GSK134612 in Healthy Adolescents/Adults

NCT00715910
View directory record Official record
Conditions
Infections, Meningococcal
Interventions
Nimenrix, Blood sampling
Biological · Procedure
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
15 Years to 30 Years
Enrollment
818 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
10
States / cities
Daly City, California • Fairfield, California • Redwood City, California + 6 more
Source: ClinicalTrials.gov public record
Updated Nov 27, 2014 · Synced Oct 30, 2026, 10:22 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Defining a PD-specific Breath Fingerprint of Underlying Inflammatory and Neurodegenerative Processes

NCT02749214
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Blood Sample Collection, Breath Sample Collection
Other
Lead sponsor
Emory University
Other
Eligibility
25 Years to 85 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 18, 2019 · Synced Oct 30, 2026, 10:22 PM EDT
Completed Phase 4 Interventional Results available

The REbif® vs Glatiramer Acetate in Relapsing Multiple Sclerosis Pharmacogenetics Trial

NCT01034579
View directory record Official record
Conditions
Relapsing Multiple Sclerosis
Interventions
Blood sampling
Other
Lead sponsor
EMD Serono
Industry
Eligibility
18 Years and older
Enrollment
324 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
1
States / cities
Rockland, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 10, 2014 · Synced Oct 30, 2026, 10:22 PM EDT
Completed No phase listed Observational

Collection and Storage of Blood and Tissue Samples From Patients Who Are Undergoing Surgery For Lung Cancer

NCT00899782
View directory record Official record
Conditions
Lung Carcinoma, Lung Neoplasm, Malignant Lung Neoplasm
Interventions
cytology specimen collection procedure
Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2022
U.S. locations
19
States / cities
Lewes, Delaware • Newark, Delaware • Elkton, Maryland + 14 more
Source: ClinicalTrials.gov public record
Updated Aug 3, 2022 · Synced Oct 30, 2026, 10:22 PM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

Discovery and Validation of Genetic Variants Affecting Microglial Activation in Alzheimer's Disease

NCT04840979
View directory record Official record
Conditions
Alzheimer Disease
Interventions
11C-ER176, 18F-florbetaben
Drug
Lead sponsor
Columbia University
Other
Eligibility
50 Years and older
Enrollment
107 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Oct 30, 2026, 10:22 PM EDT
Active, not recruiting Not applicable Interventional

Comprehensive Genomic Analysis in Tissue Samples From Patients With Recurrent or Stage IV Non-small Cell Lung Cancer

NCT02178163
View directory record Official record
Conditions
Recurrent Non-small Cell Lung Cancer, Stage IV Non-small Cell Lung Cancer
Interventions
cytology specimen collection procedure, laboratory biomarker analysis
Other
Lead sponsor
Barbara Ann Karmanos Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
619 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2027
U.S. locations
11
States / cities
Bay City, Michigan • Bloomfield Hills, Michigan • Clarkston, Michigan + 8 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Oct 30, 2026, 10:22 PM EDT
Active, not recruiting Phase 1Phase 2 Interventional

BreastVAX: Radiation Boost to Enhance Immune Checkpoint Blockade Therapy

NCT04454528
View directory record Official record
Conditions
Breast Cancer
Interventions
Hypofractionated radiotherapy, Pembrolizumab infusion, Blood and tissue sampling
Radiation · Drug · Procedure
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Oct 30, 2026, 10:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

HPV Self-sampling for Underscreened Latinas

NCT06439706
View directory record Official record
Conditions
Uterine Cervical Neoplasm
Interventions
HPV Self-Sampling, Group Education
Behavioral
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
30 Years to 65 Years · Female only
Enrollment
108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Oct 30, 2026, 10:22 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Anal Cytology Collection Procedures in Predicting High-Grade Anal Dysplasia in Men Who Have Sex With Men

NCT02816879
View directory record Official record
Conditions
Anal Carcinoma, HIV Infection, Human Papillomavirus Infection
Interventions
Cytology Specimen Collection Procedure, Laboratory Biomarker Analysis
Procedure · Other
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
18 Years and older · Male only
Enrollment
415 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2028
U.S. locations
3
States / cities
Los Angeles, California • Palm Springs, California
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Oct 30, 2026, 10:22 PM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Microbial Sampling of Carious Dentin

NCT04011605
View directory record Official record
Conditions
Caries,Dental
Interventions
Biological Sample of Carious Dentin
Procedure
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 99 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated May 10, 2023 · Synced Oct 30, 2026, 10:22 PM EDT
Terminated No phase listed Observational

Molecular Characterization of CTCs and ctDNA in Blood and Plasma Samples From Patients With Metastatic and/or Hormone-Resistant Prostate Cancer

NCT02370355
View directory record Official record
Conditions
Hormone-Resistant Prostate Cancer, Metastatic Prostate Carcinoma
Interventions
Cytology Specimen Collection Procedure, Laboratory Biomarker Analysis
Other
Lead sponsor
University of Southern California
Other
Eligibility
19 Years and older · Male only
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 17, 2017 · Synced Oct 30, 2026, 10:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Variability in Microbial Response to Dietary Fiber

NCT06023940
View directory record Official record
Conditions
Microbial Colonization
Interventions
High fiber
Dietary Supplement
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
45 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 24, 2024 · Synced Oct 30, 2026, 10:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Comparison of Capnography Sampling Lines

NCT03554629
View directory record Official record
Conditions
Capnography
Interventions
Capnography CO2 cannula sampling Flexiterline (CCSF) designs with supplemental O2
Device
Lead sponsor
Medtronic - MITG
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Louisville, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 6, 2021 · Synced Oct 30, 2026, 10:22 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Microbial Testing for Caries Risk Assessment

NCT03389373
View directory record Official record
Conditions
Dental Caries
Interventions
GC Strep Mutans Saliva Sampling
Device
Lead sponsor
University of Colorado, Denver
Other
Eligibility
24 Months to 96 Months
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 16, 2018 · Synced Oct 30, 2026, 10:22 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Metabolic Processes in Adults and Adolescents With Autism Spectrum Disorder

NCT02733120
View directory record Official record
Conditions
Autism Spectrum Disorder
Interventions
stable isotope infusion
Other
Lead sponsor
Texas A&M University
Other
Eligibility
16 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Sep 30, 2025 · Synced Oct 30, 2026, 10:22 PM EDT
Completed No phase listed Observational

Self-sampling for the Study of COVID-19

NCT04447495
View directory record Official record
Conditions
Coronavirus
Interventions
iAMP test
Diagnostic Test
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
New Berlin, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 23, 2021 · Synced Oct 30, 2026, 10:22 PM EDT
Active, not recruiting No phase listed Observational

COVID-19 Outcome Prediction Algorithm

NCT05471011
View directory record Official record
Conditions
COVID-19, Post Acute Sequelae of COVID-19, Long COVID, Organ Dysfunction Syndrome, Multiple, Frailty Syndrome
Interventions
Blood and nasal swab sampling
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
7
States / cities
Los Angeles, California • Sylmar, California • Torrance, California + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 24, 2026 · Synced Oct 30, 2026, 10:22 PM EDT