Opportunities for Healthy Volunteers

Contribute to medical research by participating in studies designed for healthy participants in your selected area.

Find Healthy Volunteer Studies by Location

Discover research opportunities worldwide for healthy participants

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Matched clinical trials

  • Long‑term immunity after a 6‑month‑old MMR vaccine (live attenuated) in infants: follow‑up of antibody levels 1‑3 years after routine vaccination

    Recruiting

    3 1 1 1
    Investigated Diseases:
    Denmark
  • Study of FLUDEOXYGLUCOSE (18F) PET Imaging of Brain Metabolism in Patients with Persistent Post‑COVID Syndrome

    Recruiting

    3 1 1 1
    Investigated Diseases:
    Investigated Drugs:
    The Netherlands
  • Safety and Tolerability of Tenofovir Alafenamide Dose Escalation in Healthy Adults for Epstein‑Barr Virus Infection

    Recruiting

    2 1 1 1
    Investigated Diseases:
    Investigated Drugs:
    Norway
  • Total-Body PET with [18F]Flutemetamol in Patients with Post-COVID Syndrome (Long COVID)

    Recruiting

    1 1 1 1
    Investigated Diseases:
    Investigated Drugs:
    The Netherlands
  • A study using [11C]ORM-13070 to examine the effects of aging and Parkinson’s disease on specific brain receptors.

    Recruiting

    2 1 1
    France
  • A study to evaluate the effectiveness of NNC0662-0419 and semaglutide in people with type 2 diabetes

    Recruiting

    2 1 1
    Investigated Diseases:
    Investigated Drugs:
    Croatia Hungary Poland Portugal Slovakia Spain
  • A study to evaluate the use of leflutrozole to improve semen quality in men with non-obstructive azoospermia

    Recruiting

    2 1 1
    Investigated Diseases:
    Denmark
  • Study to evaluate the effect of omaveloxolone on mitochondrial function in patients with Friedreich’s ataxia

    Recruiting

    3 1 1 1
    Investigated Diseases:
    Investigated Drugs:
    Czechia Poland
  • Using [18F]DED PET imaging to study brain changes in patients with Alzheimer’s disease, CADASIL, and other forms of dementia.

    Recruiting

    2 1 1
    Investigated Drugs:
    Spain
  • A study to evaluate the effects of CSX-1004 on breathing difficulties caused by fentanyl in healthy adults and people with opioid use disorder

    Recruiting

    2 1 1
    Investigated Diseases:
    Investigated Drugs:
    The Netherlands
  • A study to compare weekly or event-based use of doxycycline to prevent sexually transmitted infections in men who have sex with men and transgender women using HIV prevention medication.

    Recruiting

    3 1 1 1
    Investigated Drugs:
    Belgium
  • Evaluating the effect of recombinant varicella zoster virus glycoprotein E vaccine on heart problems and dementia in adults aged 65 years or older with herpes zoster

    Recruiting

    3 1 1 1
    Investigated Diseases:
    Denmark