{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Covid-19+Antibody+Test&page=4",
    "query": {
      "intervention": "Covid-19 Antibody Test",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 76,
    "total_pages": 8,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Covid-19+Antibody+Test&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Covid-19+Antibody+Test&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-08T10:46:19.958Z",
  "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": "NCT04465981",
      "title": "Investigation of Antibody and Immune Responses to SARS-CoV-2 Proteins in COVID-19 Patients",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19",
        "SARS-CoV-2 Infection"
      ],
      "interventions": [
        {
          "name": "Sampling",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "INanoBio Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 80,
      "start_date": "2020-07-03",
      "completion_date": "2022-12",
      "has_results": false,
      "last_update_posted_date": "2021-08-27",
      "last_synced_at": "2026-10-08T10:46:19.958Z",
      "location_count": 1,
      "location_summary": "Tucson, Arizona",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04465981"
    },
    {
      "nct_id": "NCT05123742",
      "title": "PREDICT: A PBRN Feasibility Study on COVID-19 Screening in Dental Practice",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19 Infection"
      ],
      "interventions": [
        {
          "name": "COVID-19 Testing",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Rutgers, The State University of New Jersey",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 72,
      "start_date": "2021-12-13",
      "completion_date": "2022-12-31",
      "has_results": true,
      "last_update_posted_date": "2023-10-05",
      "last_synced_at": "2026-10-08T10:46:19.958Z",
      "location_count": 1,
      "location_summary": "Newark, New Jersey",
      "locations": [
        {
          "city": "Newark",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05123742"
    },
    {
      "nct_id": "NCT05220397",
      "title": "Janssen Ad26.CoV2.S Vaccine Booster in Kidney Transplant Recipients",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Kidney Transplant Recipient"
      ],
      "interventions": [
        {
          "name": "Janssen Ad26.CoV2.S Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Reduction in Immunosuppression Medication",
          "type": "OTHER"
        },
        {
          "name": "Maintenance in Immunosuppression Medication",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Mark Stegall",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 468,
      "start_date": "2022-04-11",
      "completion_date": "2025-02-28",
      "has_results": true,
      "last_update_posted_date": "2025-09-15",
      "last_synced_at": "2026-10-08T10:46:19.958Z",
      "location_count": 3,
      "location_summary": "Phoenix, Arizona • Jacksonville, Florida • Rochester, Minnesota",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05220397"
    },
    {
      "nct_id": "NCT04474288",
      "title": "The COVID-19 PUI Reality Check (CPRC) Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19 Immunology"
      ],
      "interventions": [
        {
          "name": "SARS-CoV-2 antibody testing",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Bassett Healthcare",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 37,
      "start_date": "2020-07-16",
      "completion_date": "2022-02-28",
      "has_results": false,
      "last_update_posted_date": "2022-03-11",
      "last_synced_at": "2026-10-08T10:46:19.958Z",
      "location_count": 1,
      "location_summary": "Cooperstown, New York",
      "locations": [
        {
          "city": "Cooperstown",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04474288"
    },
    {
      "nct_id": "NCT04432272",
      "title": "ANTIBODY-LEVEL BASED ANALYSIS OF COVID-19 CONVALESCENT SERUM (ABACCuS)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "COVID-19",
        "Severe Acute Respiratory Syndrome (SARS)",
        "Coronavirus Infections"
      ],
      "interventions": [
        {
          "name": "COVID-19 convalescent plasma",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Corewell Health East",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 71,
      "start_date": "2020-07-16",
      "completion_date": "2020-11-28",
      "has_results": true,
      "last_update_posted_date": "2022-03-09",
      "last_synced_at": "2026-10-08T10:46:19.958Z",
      "location_count": 1,
      "location_summary": "Royal Oak, Michigan",
      "locations": [
        {
          "city": "Royal Oak",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04432272"
    },
    {
      "nct_id": "NCT01073475",
      "title": "Maternal Newborn Health Registry",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pregnancy Outcome Trends in Low-resource Geographic Areas"
      ],
      "interventions": [
        {
          "name": "There is no intervention associated with the parent MNHR study. For the MNHR COVID sub-study, participants will be asked to provide a blood specimen at or near delivery.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "NICHD Global Network for Women's and Children's Health",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 950000,
      "start_date": "2008-05",
      "completion_date": "2030-05",
      "has_results": false,
      "last_update_posted_date": "2026-01-21",
      "last_synced_at": "2026-10-08T10:46:19.958Z",
      "location_count": 8,
      "location_summary": "Birmingham, Alabama • Aurora, Colorado • Indianapolis, Indiana + 5 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01073475"
    },
    {
      "nct_id": "NCT04682132",
      "title": "Polk COVID-19 and Flu Response",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "COVID-19 antigen and antibody tests, and influenza rapid test",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Polk County Fire Rescue",
      "sponsor_class": "OTHER_GOV",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 686,
      "start_date": "2020-05-26",
      "completion_date": "2021-07-31",
      "has_results": false,
      "last_update_posted_date": "2021-04-21",
      "last_synced_at": "2026-10-08T10:46:19.958Z",
      "location_count": 1,
      "location_summary": "Bartow, Florida",
      "locations": [
        {
          "city": "Bartow",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04682132"
    },
    {
      "nct_id": "NCT05918952",
      "title": "RADx-UP CDCC Rapid Research Pilot Program \"Culturally-relevant Community Connections (C3) to Increase COVID-19 Testing",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Covid-19 Antibody Test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Short Clip videos",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 327,
      "start_date": "2023-08-21",
      "completion_date": "2024-06-13",
      "has_results": true,
      "last_update_posted_date": "2026-01-02",
      "last_synced_at": "2026-10-08T10:46:19.958Z",
      "location_count": 1,
      "location_summary": "Greensboro, North Carolina",
      "locations": [
        {
          "city": "Greensboro",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05918952"
    },
    {
      "nct_id": "NCT04969263",
      "title": "COVID-19 Protection After Transplant Pilot Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Kidney Transplant Recipients"
      ],
      "interventions": [
        {
          "name": "BNT162b2 vaccine (Pfizer/BioNTech)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1273 vaccine (Moderna)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 81,
      "start_date": "2021-08-10",
      "completion_date": "2023-03-10",
      "has_results": true,
      "last_update_posted_date": "2025-07-30",
      "last_synced_at": "2026-10-08T10:46:19.958Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04969263"
    },
    {
      "nct_id": "NCT06539728",
      "title": "Validation of Texture Changing Coatings for Use in At-Home Rapid Tests",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vision, Low",
        "Blindness"
      ],
      "interventions": [
        {
          "name": "Interaction with Mock COVID-19 Rapid Antigen Test and Reference Surfaces",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Biomechanical Measurements",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Psychophysical Tasks",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "BEHAVIORAL"
      ],
      "sponsor": "University of Delaware",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2025-06",
      "completion_date": "2025-08",
      "has_results": false,
      "last_update_posted_date": "2025-04-06",
      "last_synced_at": "2026-10-08T10:46:19.958Z",
      "location_count": 1,
      "location_summary": "Newark, Delaware",
      "locations": [
        {
          "city": "Newark",
          "state": "Delaware"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06539728"
    }
  ]
}