Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Normal Controls clinical trials
2 of 3 indexed Normal Controls trials are currently recruiting.
Corpus placement: #5,209 of 28,707 conditions by registered trial count.
3 US clinical trials · 2 currently recruiting · #5,209 of 28,707 conditions by registered trial count
Normal Controls: 3 US clinical trials tracked, 2 recruiting.
Normal Controls is the subject of 3 registered US clinical trials on ClinicalTrials.gov, 2 of them currently open to new participants. The most active sponsor is National Institute of Environmental Health Sciences (NIEHS), running 1 of these trials.
Enrollment posture brief
Registry condition normal-controls
OPEN 2 | RECR 67% | LATE 0 | EARLY 0 | RANK #5209 | SPON 1
Volume-matched condition peers
Nearest open-share peer: Acute Hypoxemic Respiratory Failure (67% recruiting · 6 trials)
Normal Controls lists 2 open slots (67% of 3 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 Normal Controls 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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Normal Controls is recruiting above its size-band peers.
2 of 3 indexed trials (66.7%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
Open and recent trials
3 total, page 1 of 1
Natural History of the Human Biological Response to Environmental Exposure and Injury
National Institute of Environmental Health Sciences (NIEHS)
NCT04888923
Oxalate and Citrate
University of Chicago
NCT05334979
Tau PET Imaging in the NACC Study Cohort
University of Pennsylvania
NCT03189485
Phase Distribution
Phase data not available
Top Sponsors
Named interventions
Most-linked intervention names on Normal Controls records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Normal Controls 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 Normal Controls page
3 registered trials, 2 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 2 Normal Controls trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- National Institute of Environmental Health Sciences (NIEHS) sponsors the most Normal Controls trials on record, review their full trial history before evaluating a specific study. See National Institute of Environmental Health Sciences (NIEHS)'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 Normal Controls condition card totals 3 registered trials; most-linked intervention the radiotracer 18F-AV-1451; top US site state Pennsylvania. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.