{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pain+testing&page=21",
    "query": {
      "intervention": "Pain testing",
      "page": 21
    },
    "page_size": 10
  },
  "pagination": {
    "page": 21,
    "page_size": 10,
    "total_count": 788,
    "total_pages": 79,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pain+testing&page=22&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pain+testing&page=20&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-23T04:24:01.730Z",
  "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": "NCT00672737",
      "title": "Study of Pain Processing in Subjects Suffering From Obstructive Sleep Apnea",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sleep Apnea, Obstructive"
      ],
      "interventions": [
        {
          "name": "Remifentanil",
          "type": "DRUG"
        },
        {
          "name": "Cold pain threshold and tolerance",
          "type": "PROCEDURE"
        },
        {
          "name": "Heat pain threshold and tolerance",
          "type": "DEVICE"
        },
        {
          "name": "Polysomnography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "DEVICE"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "18 Years to 55 Years · Male only"
      },
      "enrollment_count": 56,
      "start_date": "2008-02",
      "completion_date": "2010-08",
      "has_results": true,
      "last_update_posted_date": "2017-08-07",
      "last_synced_at": "2026-10-23T04:24:01.730Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00672737"
    },
    {
      "nct_id": "NCT07222462",
      "title": "A Superiority Trial of Radiofrequency Ablation for Low Back Pain",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Low Back Pain (CLBP)"
      ],
      "interventions": [
        {
          "name": "Lumbar radiofrequency ablation with conventional electrodes (LRFA-C)",
          "type": "PROCEDURE"
        },
        {
          "name": "Lumbar radiofrequency ablation with multi-tined electrodes (LRFA-M)",
          "type": "PROCEDURE"
        },
        {
          "name": "Simulated lumbar radiofrequency ablation",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2026-02-04",
      "completion_date": "2029-08",
      "has_results": false,
      "last_update_posted_date": "2026-02-09",
      "last_synced_at": "2026-10-23T04:24:01.730Z",
      "location_count": 3,
      "location_summary": "Atlanta, Georgia • Cleveland, Ohio • Salt Lake City, Utah",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07222462"
    },
    {
      "nct_id": "NCT01441141",
      "title": "Genetics and Pain Severity in Sickle Cell Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Genotype",
        "Pain",
        "Genetic Variation",
        "Quantitative Sensory Testing (QST)",
        "GCH1"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Heart, Lung, and Blood Institute (NHLBI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 67,
      "start_date": "2012-06-17",
      "completion_date": "2020-12-09",
      "has_results": false,
      "last_update_posted_date": "2020-12-10",
      "last_synced_at": "2026-10-23T04:24:01.730Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01441141"
    },
    {
      "nct_id": "NCT02301741",
      "title": "Using an Interactive Game to Reduce Fear and Increase Spine Motion in Low Back Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Low Back Pain"
      ],
      "interventions": [
        {
          "name": "Game",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Ohio University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 53,
      "start_date": "2015-01",
      "completion_date": "2016-04",
      "has_results": false,
      "last_update_posted_date": "2016-06-13",
      "last_synced_at": "2026-10-23T04:24:01.730Z",
      "location_count": 1,
      "location_summary": "Athens, Ohio",
      "locations": [
        {
          "city": "Athens",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02301741"
    },
    {
      "nct_id": "NCT06701461",
      "title": "Measurement of Osteoarthritic Patient Pain Through Electrodermal Activity Signals",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteo Arthritis Knee"
      ],
      "interventions": [
        {
          "name": "Electrodermal Activity signal",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Dartmouth-Hitchcock Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "50 Years to 80 Years"
      },
      "enrollment_count": 15,
      "start_date": "2026-08",
      "completion_date": "2026-10",
      "has_results": false,
      "last_update_posted_date": "2026-03-06",
      "last_synced_at": "2026-10-23T04:24:01.730Z",
      "location_count": 1,
      "location_summary": "Lebanon, New Hampshire",
      "locations": [
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06701461"
    },
    {
      "nct_id": "NCT05444582",
      "title": "Levonorgestrel 52 mg IUD for Emergency Contraception and Same-Day Start",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Contraception"
      ],
      "interventions": [
        {
          "name": "Levonorgestrel 52 MG Intrauterine System",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "35 Years",
        "sex": "FEMALE",
        "summary": "16 Years to 35 Years · Female only"
      },
      "enrollment_count": 1404,
      "start_date": "2022-11-07",
      "completion_date": "2027-07-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-16",
      "last_synced_at": "2026-10-23T04:24:01.730Z",
      "location_count": 8,
      "location_summary": "San Jose, California • Denver, Colorado • Chicago, Illinois + 5 more",
      "locations": [
        {
          "city": "San Jose",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Saint Paul",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05444582"
    },
    {
      "nct_id": "NCT04923633",
      "title": "The Reproducibility and Consistency of Instrument-assisted Soft Tissue Manipulation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Massage"
      ],
      "interventions": [
        {
          "name": "Quantifiable Soft Tissue Manipulation (QSTM)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 106,
      "start_date": "2021-05-11",
      "completion_date": "2022-10-19",
      "has_results": false,
      "last_update_posted_date": "2023-11-14",
      "last_synced_at": "2026-10-23T04:24:01.730Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04923633"
    },
    {
      "nct_id": "NCT04811521",
      "title": "Patient-centered Treatment of Anxiety After Low-Risk Chest Pain in the Emergency Room",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Generalized Anxiety Disorder",
        "Chest Pain",
        "Panic"
      ],
      "interventions": [
        {
          "name": "Primary care follow-up",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Online Self-Administered Anxiety Management Program plus Peer Support Guidance",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Therapist-Administered Cognitive Behavioral Therapy",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 375,
      "start_date": "2021-04-01",
      "completion_date": "2025-08-17",
      "has_results": false,
      "last_update_posted_date": "2024-07-30",
      "last_synced_at": "2026-10-23T04:24:01.730Z",
      "location_count": 5,
      "location_summary": "Avon, Indiana • Carmel, Indiana • Fishers, Indiana + 2 more",
      "locations": [
        {
          "city": "Avon",
          "state": "Indiana"
        },
        {
          "city": "Carmel",
          "state": "Indiana"
        },
        {
          "city": "Fishers",
          "state": "Indiana"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Muncie",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04811521"
    },
    {
      "nct_id": "NCT04162262",
      "title": "Effects of Exercise Versus Exercise and Instrument-Assisted Soft Tissue Mobilization for Plantar Fasciopathy Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Plantar Fascitis"
      ],
      "interventions": [
        {
          "name": "Instrumental-assisted soft tissue mobilization (IASTM)",
          "type": "OTHER"
        },
        {
          "name": "High-Load Strength Training",
          "type": "OTHER"
        },
        {
          "name": "Plantar Flexor and Gastrocnemius Stretching",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Texas Tech University Health Sciences Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 83,
      "start_date": "2019-10-24",
      "completion_date": "2021-01-15",
      "has_results": false,
      "last_update_posted_date": "2021-02-05",
      "last_synced_at": "2026-10-23T04:24:01.730Z",
      "location_count": 1,
      "location_summary": "Lubbock, Texas",
      "locations": [
        {
          "city": "Lubbock",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04162262"
    },
    {
      "nct_id": "NCT03840161",
      "title": "Use of CoG by Patients With Diabetes Mellitus",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Diabetes Mellitus"
      ],
      "interventions": [
        {
          "name": "non-invasive tissue glucose prediction",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Sciema UG",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 40,
      "start_date": "2018-07-16",
      "completion_date": "2019-03-31",
      "has_results": false,
      "last_update_posted_date": "2020-01-18",
      "last_synced_at": "2026-10-23T04:24:01.730Z",
      "location_count": 1,
      "location_summary": "San Mateo, California",
      "locations": [
        {
          "city": "San Mateo",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03840161"
    }
  ]
}