{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Mass+Balance+Recovery",
    "query": {
      "condition": "Mass Balance Recovery"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 9,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-04T21:15:57.947Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT01663389",
      "title": "A Study to Investigate the Recovery, Excretion, and Pharmacokinetics of 14C -GSK1322322 After an Intravenous and an Oral Dose",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Infections, Bacterial"
      ],
      "interventions": [
        {
          "name": "GSK1322322 1000 mg containing radioactive 14C-GSK1322322",
          "type": "DRUG"
        },
        {
          "name": "GSK1322322 1200 mg containing radioactive 14C-GSK1322322",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "30 Years to 55 Years · Male only"
      },
      "enrollment_count": 5,
      "start_date": "2012-08-10",
      "completion_date": "2012-10-05",
      "has_results": false,
      "last_update_posted_date": "2017-06-12",
      "last_synced_at": "2026-09-04T21:15:57.947Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01663389"
    },
    {
      "nct_id": "NCT00828763",
      "title": "GSK1349572 Mass Balance Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Volunteer"
      ],
      "interventions": [
        {
          "name": "[14c}-GSK1349572",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "30 Years to 55 Years · Male only"
      },
      "enrollment_count": 6,
      "start_date": "2009-02",
      "completion_date": "2009-03",
      "has_results": false,
      "last_update_posted_date": "2009-06-05",
      "last_synced_at": "2026-09-04T21:15:57.947Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00828763"
    },
    {
      "nct_id": "NCT05339633",
      "title": "Study in Healthy Adult Female Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Mass Balance Recovery"
      ],
      "interventions": [
        {
          "name": "[14C]-D-0502",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "InventisBio Co., Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 65 Years · Female only"
      },
      "enrollment_count": 8,
      "start_date": "2022-03-29",
      "completion_date": "2022-10-31",
      "has_results": false,
      "last_update_posted_date": "2023-04-06",
      "last_synced_at": "2026-09-04T21:15:57.947Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05339633"
    },
    {
      "nct_id": "NCT01848340",
      "title": "An Study to Investigate the Recovery, Excretion, and Pharmacokinetics of 14C-GSK1265744 Administered as a Single Oral Dose and a Study to Describe the Pharmacokinetics of a Supratherapeutic Dose of GSK1265744 in Healthy Adult Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV-associated Lipodystrophy Syndrome"
      ],
      "interventions": [
        {
          "name": "GSK1265744B (sodium salt) containing 14C-GSK1265744B",
          "type": "DRUG"
        },
        {
          "name": "150 mg GSK1265744B",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "ViiV Healthcare",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 16,
      "start_date": "2013-05",
      "completion_date": "2013-07",
      "has_results": false,
      "last_update_posted_date": "2013-11-04",
      "last_synced_at": "2026-09-04T21:15:57.947Z",
      "location_count": 1,
      "location_summary": "Overland Park, Kansas",
      "locations": [
        {
          "city": "Overland Park",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01848340"
    },
    {
      "nct_id": "NCT06004960",
      "title": "A Study to Assess the Mass Balance Recovery (Absorption, Distribution, Metabolism and Excretion) of [14C]CCX168 in Healthy Participants",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Anti-neutrophil Cytoplasmic Antibody-associated Vasculitis"
      ],
      "interventions": [
        {
          "name": "[14C]CCX168",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Amgen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "18 Years to 55 Years · Male only"
      },
      "enrollment_count": 6,
      "start_date": "2014-10-20",
      "completion_date": "2014-12-05",
      "has_results": false,
      "last_update_posted_date": "2023-08-22",
      "last_synced_at": "2026-09-04T21:15:57.947Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06004960"
    },
    {
      "nct_id": "NCT04637139",
      "title": "A Study to Evaluate the Mass Balance Absorption and AME of VBR",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Chronic Hepatitis B"
      ],
      "interventions": [
        {
          "name": "Vebicorvir (VBR)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Assembly Biosciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "18 Years to 55 Years · Male only"
      },
      "enrollment_count": 6,
      "start_date": "2020-12-01",
      "completion_date": "2020-12-22",
      "has_results": false,
      "last_update_posted_date": "2021-01-12",
      "last_synced_at": "2026-09-04T21:15:57.947Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04637139"
    },
    {
      "nct_id": "NCT05006118",
      "title": "Pharmacokinetics and Excretion of Oral [14C]-Rodatristat Ethyl",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Radio-labeled rodatristat ethyl 600 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Altavant Sciences GmbH",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "18 Years to 55 Years · Male only"
      },
      "enrollment_count": 5,
      "start_date": "2021-09-23",
      "completion_date": "2021-10-06",
      "has_results": false,
      "last_update_posted_date": "2022-07-13",
      "last_synced_at": "2026-09-04T21:15:57.947Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05006118"
    },
    {
      "nct_id": "NCT01310296",
      "title": "Lofexidine ADME & Mass Balance in Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Normal Healthy Volunteers Will be Treated With Lofexidine to Understand the Absolute Bioavailability and Mass Balance Recovery of the Product"
      ],
      "interventions": [
        {
          "name": "Lofexidine hydrochloride",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "USWM, LLC (dba US WorldMeds)",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 12,
      "start_date": "2011-07",
      "completion_date": "2011-08",
      "has_results": false,
      "last_update_posted_date": "2017-10-26",
      "last_synced_at": "2026-09-04T21:15:57.947Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01310296"
    },
    {
      "nct_id": "NCT01273103",
      "title": "A Study to Investigate the Recovery, Excretion, and Pharmacokinetics of 14C-GSK2248761 Administered as an Oral Suspension to Healthy Adult Subjects",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Infection, Human Immunodeficiency Virus"
      ],
      "interventions": [
        {
          "name": "200mg [14C]- GSK2248761",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "ViiV Healthcare",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "30 Years to 55 Years · Male only"
      },
      "enrollment_count": 0,
      "start_date": "2011-01",
      "completion_date": "2011-02",
      "has_results": false,
      "last_update_posted_date": "2014-05-19",
      "last_synced_at": "2026-09-04T21:15:57.947Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01273103"
    }
  ]
}