{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Isotope+Labeling",
    "query": {
      "condition": "Isotope Labeling"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-26T16:27:45.884Z",
  "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": "NCT07367854",
      "title": "Diet Synergy in Muscle Protein Synthesis",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Muscle Protein Synthetic Response to Protein",
        "Muscle Protein Synthesis",
        "Muscle Health",
        "Protein Metabolism",
        "Recreational Activities",
        "Isotope Labeling"
      ],
      "interventions": [
        {
          "name": "Resistance Exercise",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Potato and Beef",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Bread and Beef",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Beef",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Illinois at Urbana-Champaign",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "19 Years to 40 Years"
      },
      "enrollment_count": 15,
      "start_date": "2026-03-01",
      "completion_date": "2028-11-01",
      "has_results": false,
      "last_update_posted_date": "2026-05-01",
      "last_synced_at": "2026-06-26T16:27:45.884Z",
      "location_count": 1,
      "location_summary": "Urbana, Illinois",
      "locations": [
        {
          "city": "Urbana",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07367854"
    },
    {
      "nct_id": "NCT06930976",
      "title": "Tracing Of Real-time glu13Cose Metabolism in Human Immune Cells",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Glucose",
        "Metabolism",
        "Isotope Labeling",
        "Immune System and Related Disorders"
      ],
      "interventions": [
        {
          "name": "13C6-Glucose",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 12,
      "start_date": "2025-10-01",
      "completion_date": "2027-06-30",
      "has_results": false,
      "last_update_posted_date": "2025-11-04",
      "last_synced_at": "2026-06-26T16:27:45.884Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06930976"
    },
    {
      "nct_id": "NCT00509301",
      "title": "Safety & Radiation Distribution Study of Cotara® in Patients With Recurrent Glioblastoma Multiforme",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Recurrent Glioblastoma Multiforme"
      ],
      "interventions": [
        {
          "name": "131-I-chTNT-1/B MAB",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Peregrine Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 12,
      "start_date": "2006-11",
      "completion_date": "2010-03",
      "has_results": false,
      "last_update_posted_date": "2011-08-05",
      "last_synced_at": "2026-06-26T16:27:45.884Z",
      "location_count": 4,
      "location_summary": "Phoenix, Arizona • Cleveland, Ohio • Philadelphia, Pennsylvania + 1 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00509301"
    },
    {
      "nct_id": "NCT02751294",
      "title": "A Study to Assess the Effects of Dissolution Profile on the Pharmacokinetics of Single Oral Doses of Tafenoquine Tablets and Tafenoquine Stable Isotope Labelled Solution",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Malaria, Vivax"
      ],
      "interventions": [
        {
          "name": "Tafenoquine Control",
          "type": "DRUG"
        },
        {
          "name": "Tafenoquine dissolution profile X",
          "type": "DRUG"
        },
        {
          "name": "Tafenoquine SIL",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "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": 14,
      "start_date": "2016-05",
      "completion_date": "2016-08",
      "has_results": false,
      "last_update_posted_date": "2017-01-20",
      "last_synced_at": "2026-06-26T16:27:45.884Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02751294"
    },
    {
      "nct_id": "NCT00677716",
      "title": "Dose Confirmation Study of Cotara for the Treatment of Glioblastoma Multiforme at First Relapse",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Glioblastoma Multiforme"
      ],
      "interventions": [
        {
          "name": "131I-chTNT-1/B MAb (Cotara)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Peregrine Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 41,
      "start_date": "2007-07",
      "completion_date": "2011-11",
      "has_results": false,
      "last_update_posted_date": "2014-04-24",
      "last_synced_at": "2026-06-26T16:27:45.884Z",
      "location_count": 3,
      "location_summary": "Phoenix, Arizona • Philadelphia, Pennsylvania • Charleston, South Carolina",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00677716"
    }
  ]
}