For volunteers

Healthy volunteer studies in Finland

32 open studies in the registries that take healthy volunteers and have a site in Finland.

Phase 3Starts 1 Dec 2026
Ages 12 to 35All sexes586 participants
NCT07434973
Stratification and Treatment in Early Psychosis Study - PROMOTE
Turku · University of Oxford
Registry updated 8 Oct 2026
Registry record: ClinicalTrials.gov
No phaseStarts Aug 2025
Ages 12 to 100All sexes700 participants
NCT07036211
Transmission of Oncogenic HPV Infection Among Families
Tampere, Kuopio · Tampere University Hospital
Registry updated 25 Jun 2025
Registry record: ClinicalTrials.gov
No phaseStarts Sept 2026
Ages 45 to 55All sexes1400 participants
NCT07820800
NMR Metabolomics-Based Risk Assessment and Stratified Digital Health Interventions in Middle-Aged Adults (PREMAP)
Savonlinna · University of Eastern Finland
Registry updated 6 Oct 2026
Registry record: ClinicalTrials.gov
No phaseStarts 25 Feb 2022
Ages 11 to 55All sexes750 participants
NCT05223530
Prenatal Programming of Childhood Obesity and Cardio Metabolic Disorders
Helsinki · Helsinki University Central Hospital
Registry updated 24 Sept 2026
Registry record: ClinicalTrials.gov
Phase 3Starts 4 Nov 2022
From age 75Men only980 participants
NCT05448547
Immediate Curative vs Conservative Treatment in Older Men With M0, High-risk Prostate Cancer
Turku, Helsinki, Tampere · Sven Löffeler
Registry updated 10 Sept 2026
Registry record: ClinicalTrials.gov
Phase 4Starts 11 Jul 2024
Ages 18 to 75All sexes120 participants
NCT06374875
Fibrosis Lessens After Metabolic Surgery
Turku · The Cleveland Clinic
Registry updated 31 Jul 2026
Registry record: ClinicalTrials.gov
Phase 4Starts 31 Mar 2026
From age 76All sexes33609 participants
NCT07502560
A Study to Evaluate the Effect of Recombinant Zoster Vaccine on New Diagnosis of Dementia in an Older Adult Population Aged 76 Years or Older in Finland
Kokkola, Turku, Oulu, Seinäjoki, Tampere, Espoo, Helsinki, Jarvenpaa · GlaxoSmithKline
Registry updated 12 May 2026
Registry record: ClinicalTrials.gov
No phaseStarts 5 Dec 2022
Ages 18 to 49All sexes2300 participants
NCT05732623
Exogenous and Endogenous Risk Factors for Early-onset Colorectal Cancer
Helsinki · San Raffaele University
Registry updated 24 Apr 2026
Registry record: ClinicalTrials.gov
No phaseStarts 30 Oct 2025
Ages 18 to 75All sexes158 participants
NCT07430007
Exercise and Dietary Lifestyle Intervention on Reducing Atrial Fibrillation Burden, Cardiac and Body Fat Mass.
Kuopio, Tampere, Jyväskylä · University of Eastern Finland
Registry updated 24 Feb 2026
Registry record: ClinicalTrials.gov
No phaseStarts 20 Nov 2024
Ages 30 to 65All sexes68 participants
NCT06627868
Nicotinamide Adenine Dinucleotide (NAD+) Metabolism in Human Brown Adipose Tissue
Turku · University of Turku
Registry updated 18 Feb 2026
Registry record: ClinicalTrials.gov
No phaseStarts 9 Dec 2025
Ages 18 to 50Women only30 participants
NCT07272824
Usability Study of Gestational and Postpartum Weight Management Program
Turku · Turku University Hospital
Registry updated 23 Dec 2025
Registry record: ClinicalTrials.gov
No phaseStarts 11 Oct 2024
Ages 18 to 45Women only60 participants
NCT06343974
Noninvasive Evaluation of Fetal Hyperinsulinemia With Ultrasound Radiomics
Turku · Turku University Hospital
Registry updated 28 Nov 2025
Registry record: ClinicalTrials.gov
No phaseStarts 10 Apr 2023
Ages 50 to 75All sexes200 participants
NCT06218433
Urothelial Cancer Screening in Individuals With Lynch Syndrome Using a Urine Tumor DNA Panel (LS-URO Study)
Tampere · Tampere University Hospital
Registry updated 18 Nov 2025
Registry record: ClinicalTrials.gov
No phaseStarts 11 Jan 2023
Ages 18 to 74All sexes110 participants
NCT05278520
Complex Molecular Etiology and Cellular Landscape of Hip Osteoarthritis
Turku, Espoo · University of Turku
Registry updated 24 Aug 2025
Registry record: ClinicalTrials.gov
No phaseStarts 25 Mar 2024
Ages 13 to 16All sexes9000 participants
NCT06390462
Adolescent Interpersonal Counseling in Primary Care
Hämeenlinna, Helsinki, Jyväskylä, Oulu · Finnish Institute for Health and Welfare
Registry updated 19 Aug 2025
Registry record: ClinicalTrials.gov
No phaseStarts 15 Feb 2022
All sexes3000 participants
NCT06115122
PEPPI Study: Identification of Women at Risk for Placental Dysfunction
Oulu · Oulu University Hospital
Registry updated 5 Aug 2025
Registry record: ClinicalTrials.gov
No phaseStarts 1 Feb 2004
Ages 2 to 45All sexes75000 participants
NCT00097292
TrialNet Pathway to Prevention of T1D
Turku · University of South Florida
Registry updated 1 Jul 2025
Registry record: ClinicalTrials.gov
No phaseStarts 6 Nov 2024
Ages 7 to 15All sexes260 participants
NCT07031102
Methacholine Challenge Test in School Children With/Without Asthma RISKA
Helsinki · Helsinki University Central Hospital
Registry updated 22 Jun 2025
Registry record: ClinicalTrials.gov
Phase 4Starts 25 Jan 2023
Ages 20 to 60All sexes60 participants
NCT06739473
Total-body Glucose Utilization in Obesity
Turku · Turku University Hospital
Registry updated 18 Dec 2024
Registry record: ClinicalTrials.gov
No phaseStarts 31 May 2023
From age 18All sexes60 participants
NCT05898542
Nature-based Therapies in Stroke Rehabilitation
Lahti · Joint Authority for Päijät-Häme Social and Health Care
Registry updated 3 Jul 2024
Registry record: ClinicalTrials.gov
No phaseStarts 15 May 2024
Ages 1 to 5All sexes320 participants
NCT06390878
Nationwide Research on the Rewilding of Kindergarten Yards
Tampere, Helsinki · Natural Resources Institute Finland
Registry updated 24 Jun 2024
Registry record: ClinicalTrials.gov
No phaseStarts 1 Sept 2023
From age 18All sexes85 participants
NCT06005766
The Efficacy of Metacognitive Skills Training in the Context of Forensic Psychiatric Care
Vaasa · University of Jyvaskyla
Registry updated 14 May 2024
Registry record: ClinicalTrials.gov
No phaseStarts 26 May 2023
Ages 2 to 5All sexes80 participants
NCT06390696
Sand Play - the Effect of Biodiversity Exposure on Atopic Dermatitis
Tampere, Helsinki · Natural Resources Institute Finland
Registry updated 30 Apr 2024
Registry record: ClinicalTrials.gov
No phaseStarts Oct 2005
Ages 19 to 48Women only230 participants
NCT01301885
ENDOMET - Novel Diagnostic Tools and Treatments for Endometriosis
Lahti, Joensuu, Turku, Helsinki · Turku University Hospital
Registry updated 16 Aug 2021
Registry record: ClinicalTrials.gov
No phaseStarts 10 Apr 2017
Ages 18 to 70All sexes10000 participants
NCT03156478
STOP DIABETES - Knowledge-based Solutions
Kuopio · University of Eastern Finland
Registry updated 17 May 2017
Registry record: ClinicalTrials.gov
No phaseStarts 29 Jan 2024
From age 65All sexes400 participants
NCT07289204
FinnDiane LifeOne Study - Impact of Ageing on People With Type 1 Diabetes
Helsinki · Helsinki University Central Hospital
Registry updated 24 Dec 2025
Registry record: ClinicalTrials.gov
No phaseStarts 1 May 2025
Ages 18 to 75All sexes30 participants
NCT06942312
Elucidating Hepatic Metabolism in Non-alcoholic Fatty Liver Disease
Helsinki · Helsinki University Central Hospital
Registry updated 24 Apr 2025
Registry record: ClinicalTrials.gov
No phaseStarts 23 Apr 2018
Ages 50 to 63Men only17400 participants
NCT03423303
A Randomized Trial of Early Detection of Clinically Significant Prostate Cancer (ProScreen)
Tampere, Helsinki · Tampere University
Registry updated 17 Apr 2025
Registry record: ClinicalTrials.gov
No phaseStarts 11 Apr 2025
Ages 18 to 75All sexes204 participants
NCT06923735
Nutrition Apps in Occupational Healthcare (Pilot Study of the FOODNUTRI Project)
Kuopio · University of Eastern Finland
Registry updated 17 Apr 2025
Registry record: ClinicalTrials.gov
No phaseStarts 11 Jun 2024
Ages 30 to 65Women only40000 participants
NCT06931184
Self- Sampling in Cervical Cancer Routine Screening
Tampere · Tampere University Hospital
Registry updated 17 Apr 2025
Registry record: ClinicalTrials.gov
No phaseStarts 23 Nov 2018
Ages 18 to 70All sexes26 participants
NCT03755245
Biodistribution, Dosimetry and Performance of [68Ga]Ga-DOTA-Siglec-9 in Healthy and Patients With Rheumatoid Arthritis, Vasculitis or Pulmonary Sarcoidosis
Turku · Turku University Hospital
Registry updated 25 Nov 2024
Registry record: ClinicalTrials.gov
No phaseStarts 1 Sept 2024
Ages 18 to 75All sexes12 participants
NCT06559878
Hepatic Mitochondrial Metabolism in Fatty Liver Disease in Humans
Helsinki · Helsinki University Central Hospital
Registry updated 19 Aug 2024
Registry record: ClinicalTrials.gov

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