Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Healthy Volunteer: early-phase trial registry
49 of 113 indexed Healthy Volunteer trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #113 of 28,707 conditions by registered trial count.
113 US clinical trials · 49 currently recruiting · #113 of 28,707 conditions by registered trial count
Healthy Volunteer: 113 US clinical trials tracked, 49 recruiting.
Healthy Volunteer is the subject of 113 registered US clinical trials on ClinicalTrials.gov, 49 of them currently open to new participants. 0 are in Phase 3-4 (later-stage) and 86 in Phase 1-2 (earlier-stage). The most active sponsor is AbbVie, running 15 of these trials.
Enrollment posture brief
Registry condition healthy-volunteer
OPEN 49 | RECR 43% | LATE 0 | EARLY 86 | RANK #113 | SPON 15
Volume-matched condition peers
Nearest open-share peer: Bronchopulmonary Dysplasia (43% recruiting · 30 trials)
Healthy Volunteer lists 49 open slots (43% of 113 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →
Key findings
What ClinicalTrials.gov does not surface for Healthy Volunteer on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.
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Healthy Volunteer is recruiting above its size-band peers.
49 of 113 indexed trials (43.4%) are open to enrollment, against a 37.1% average across 139 conditions with 100+ trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
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Sponsorship of Healthy Volunteer trials is spread across many organizations.
AbbVie accounts for 15 of 113 trials (13.3%). 56 distinct sponsors appear on at least one study for this condition label.
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Most Healthy Volunteer trials plan to enrol fewer than 100 people.
Median target enrolment is 54 among the 113 trials that report a genuine target (sentinel values excluded). 80 of those (70.8%) plan for fewer than 100 participants.
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Healthy Volunteer research is mostly interventional.
95 interventional and 18 observational studies make up this index (84.1% interventional). Study type is sponsor-reported on ClinicalTrials.gov.
Open and recent trials
113 total, page 3 of 3
A Study to Assess Drug-Drug Interaction Between ABBV-903 and Midazolam in Adult Healthy Volunteers
AbbVie
NCT05895266
A Study to Compare Bioavailability of Naloxone Nasal Spray and Naloxone Hydrochloride (HCl) Intramuscular Injection (IM) in Healthy Volunteers
INSYS Therapeutics
NCT03827629
Study of SAGE-904 Using a Ketamine Challenge to Evaluate Electrophysiology, Safety, Tolerability, and Pharmacokinetics in Healthy Participants
Supernus Pharmaceuticals
NCT05049343
A Study to Assess How Food Affects the Movement of Oral ABBV-101 Through the Body of Healthy Adult Participants
AbbVie
NCT06887010
A Bioavailability and Pharmacokinetic Study of GDC-0032 in Healthy Volunteers
Genentech
NCT01967966
Vaccine to Prevent West Nile Virus Disease
National Institute of Allergy and Infectious Diseases (NIAID)
NCT00106769
Proton Pump Inhibitor (PPI, Rabeprazole) Effect On Tablet Formulation Of Palbociclib
Pfizer
NCT03220191
A Study to Assess Change in How Oral Icalcaprant With Itraconazole Moves Through the Body in Healthy Adult Participants
AbbVie
NCT06722430
Caloric Stimulation on Cerebral Blood Flow
Duke University
NCT01629901
A Quantitative Optical Sensor to Monitor Vascular Physiology; A Healthy Volunteer Study
Zenalux Biomedical
NCT02321995
A Study to Look at How a Single Oral Dose of Carbon-14-Labelled [14C] BIIB091 Moves Through and is Processed by the Body in Healthy Male Participants
Biogen
NCT06311786
A Pharmacokinetics Study of Radioactive-Labeled GDC-0973 in Healthy Male Volunteers
Genentech
NCT01711762
Occupancy of Adenosine A2A Receptors Using the PET Radiotracer [18F]MNI-444
Invicro
NCT05009199
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 1 | 80 |
| Phase 2 | 6 |
Top Sponsors
Named interventions
Most-linked intervention names on Healthy Volunteer records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Healthy Volunteer trials. A trial with sites in several states counts in each.
Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.
Related
What to do with this Healthy Volunteer page
113 registered trials, 49 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 49 Healthy Volunteer trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- AbbVie sponsors the most Healthy Volunteer trials on record, review their full trial history before evaluating a specific study. See AbbVie's trials
- Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide
Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.
Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Healthy Volunteer condition card totals 113 registered trials; most-linked intervention Placebo; top US site state Maryland. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.