Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Sep 14, 2026, 4:49 AM EDT

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

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Mass Balance Study Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Radiolabeled Study to Determine the Mass Balance of [14C] MGL-3196

NCT03220165
View directory record Official record
Conditions
Healthy
Interventions
MGL-3196
Drug
Lead sponsor
Madrigal Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Dec 18, 2017 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Single-Dose Study to Assess the Absorption, Metabolism, Excretion, and Mass Balance of Radiolabeled Galeterone

NCT02729376
View directory record Official record
Conditions
Healthy
Interventions
galeterone
Drug
Lead sponsor
LTN PHARMACEUTICALS, INC.
Industry
Eligibility
19 Years to 55 Years · Male only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 3, 2020 · Synced Sep 14, 2026, 4:49 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Absorption, Distribution, Metabolism, and Excretion of [14C]-MRM-3379

NCT07712718
View directory record Official record
Conditions
Healthy Volunteers
Interventions
[14C]-MRM-3379
Drug
Lead sponsor
Mirum Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Sep 14, 2026, 4:49 AM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Metabolism, the Routes and Extent of Elimination, and Drug Levels of [14C]Navlimetostat (BMS-986504) in Healthy Female Participants

NCT07777133
View directory record Official record
Conditions
Healthy Female Participants
Interventions
Navlimetostat, [14C]Navlimetostat
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 55 Years · Female only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Understand What the Body Does to the Study Medicine Called PF-07248144 When Taken by Healthy Adults

NCT07423286
View directory record Official record
Conditions
Healthy Adult Participants
Interventions
Oral [14C] PF-07248144, Oral unlabeled PF-07248144, IV [14C] PF-07248144
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
2
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 19, 2026 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Human Mass Balance Study of HMS5552 in Healthy Subjects

NCT03158506
View directory record Official record
Conditions
Healthy Subject
Interventions
HMS5552
Drug
Lead sponsor
Hua Medicine Limited
Industry
Eligibility
19 Years to 55 Years · Male only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Dec 30, 2018 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study in Healthy Adult Female Subjects

NCT05339633
View directory record Official record
Conditions
Mass Balance Recovery
Interventions
[14C]-D-0502
Drug
Lead sponsor
InventisBio Co., Ltd
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 5, 2023 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Single Dose Study To Study The Absorption, Metabolism And Excretion Of PF-04991532

NCT01469481
View directory record Official record
Conditions
Healthy
Interventions
PF-04991532
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Jan 30, 2012 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Mass Balance Study of KBP-5074 in Healthy Male Subjects

NCT04634812
View directory record Official record
Conditions
Healthy
Interventions
KBP-5074
Drug
Lead sponsor
KBP Biosciences
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Lofexidine Mass Balance in Volunteers

NCT01629446
View directory record Official record
Conditions
Normal Healthy Volunteers
Interventions
Lofexidine hydrochloride
Drug
Lead sponsor
USWM, LLC (dba US WorldMeds)
Industry
Eligibility
18 Years to 50 Years · Male only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Oct 25, 2017 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Assess the Mass Balance of [14C] ABBV-903 in Healthy Male Participants Following Single Oral Dose Administration

NCT05995366
View directory record Official record
Conditions
Healthy Volunteer
Interventions
ABBV-903
Drug
Lead sponsor
AbbVie
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 25, 2023 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Lofexidine ADME & Mass Balance in Volunteers

NCT01310296
View directory record Official record
Conditions
Normal Healthy Volunteers Will be Treated With Lofexidine to Understand the Absolute Bioavailability and Mass Balance Recovery of the Product
Interventions
Lofexidine hydrochloride
Drug
Lead sponsor
USWM, LLC (dba US WorldMeds)
Industry
Eligibility
18 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Oct 25, 2017 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Pharmacokinetics of BAL8728 After a Single Dose of Pyridinylmethyl-14C-Labeled Isavuconazonium Sulfate in Healthy Male Subjects

NCT02059590
View directory record Official record
Conditions
Pharmacokinetics of 14C-labeled Isavuconazonium Sulfate, Healthy Subjects
Interventions
Pyridinylmethyl-14C-labeled isavuconazonium sulfate
Drug
Lead sponsor
Astellas Pharma Global Development, Inc.
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 10, 2014 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of RPT193 in Healthy Adult Male Subjects

NCT06087978
View directory record Official record
Conditions
Healthy Male Subjects
Interventions
14C RPT193
Drug
Lead sponsor
RAPT Therapeutics, Inc.
Industry
Eligibility
19 Years to 55 Years · Male only
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Nov 28, 2023 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional

A Phase I Study to Determine Absorption, Distribution, Metabolism, and Elimination of a Single Radiolabeled Dose of Brivanib (BMS-582664)

NCT00435669
View directory record Official record
Conditions
Tumors
Interventions
Brivanib
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 21, 2009 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Human AME Study for Omaveloxolone

NCT03931590
View directory record Official record
Conditions
Healthy Male Subjects
Interventions
[14C]-Omaveloxolone
Drug
Lead sponsor
Biogen
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 29, 2025 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

RE104 Radiolabeled Mass Balance (hAME) Study

NCT07146191
View directory record Official record
Conditions
Healthy Participant Study
Interventions
2-[14C]-RE104 for Injection
Drug
Lead sponsor
Reunion Neuroscience Inc
Industry
Eligibility
18 Years to 55 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Nov 19, 2025 · Synced Sep 14, 2026, 4:49 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

A Study to Investigate the Absorption, Metabolism and Excretion of Talampanel

NCT00868361
View directory record Official record
Conditions
Healthy
Interventions
Talampanel (non-radiolabeled), [14C] Talampanel
Drug
Lead sponsor
Teva Branded Pharmaceutical Products R&D, Inc.
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 15, 2009 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional

Mass Balance Study of JTZ-951 in Subjects With End-stage Renal Disease on Hemodialysis

NCT02805244
View directory record Official record
Conditions
Anemia of Chronic Kidney Disease
Interventions
JTZ-951, 14C-JTZ-951
Drug
Lead sponsor
Akros Pharma Inc.
Industry
Eligibility
18 Years to 75 Years · Male only
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 28, 2016 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study to Assess Absolute Bioavailability (ABA) of TAK-831 and to Characterize Mass Balance, Pharmacokinetics (PK), Metabolism, and Excretion of [14C]TAK-831 in Male Healthy Participants

NCT04234672
View directory record Official record
Conditions
Healthy Volunteers
Interventions
TAK-831 Oral Tablet, [14C]TAK-831 IV Infusion, [14C]TAK-831 Oral Suspension
Drug
Lead sponsor
Neurocrine Biosciences
Industry
Eligibility
19 Years to 55 Years · Male only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jun 29, 2021 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

An Open-label, Single-dose, Non-randomized Study of IV 14C-labeled PER977 in Healthy Male Subjects

NCT02205905
View directory record Official record
Conditions
Healthy
Interventions
14C PER977
Drug
Lead sponsor
Perosphere Pharmaceuticals Inc, a wholly owned subsidiary of AMAG Pharmaceuticals, Inc.
Industry
Eligibility
15 Years to 55 Years · Male only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated May 19, 2020 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Assess the Mass Balance of [14C] ABBV-552 in Healthy Male Participants Following Single Oral Dose Administration

NCT06278766
View directory record Official record
Conditions
Healthy Volunteer
Interventions
ABBV-552
Drug
Lead sponsor
AbbVie
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 28, 2024 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Investigate the Absorption, Metabolism, Excretion, and Mass Balance of GC4419 in Healthy Adult Subjects

NCT03163173
View directory record Official record
Conditions
Healthy Volunteers, Healthy
Interventions
GC4419
Drug
Lead sponsor
Galera Therapeutics, Inc.
Industry
Eligibility
19 Years to 55 Years · Male only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Nov 16, 2017 · Synced Sep 14, 2026, 4:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of the Pharmacokinetics of Intravenous Administered 14C-MNTX

NCT01367483
View directory record Official record
Conditions
Healthy Male Volunteers
Interventions
IV methylnaltrexone (MNTX)
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 45 Years · Male only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Nov 26, 2019 · Synced Sep 14, 2026, 4:49 AM EDT