U.S. National Institutes of Health
nih.gov ↗U.S. federal medical research agency operating PubMed, NCBI, MedlinePlus, and trial registries.
A+ — federal medical research authority; primary-source data + policy.
Federally-funded research subject to grant + ethics oversight; ClinicalTrials.gov registration required for human studies.
About this sub-score →Operates PubMed + NCBI + ClinicalTrials.gov; APIs + bulk data + structured XML throughout.
About this sub-score →Default biomedical citation source for AI engines + journalism; NIH press releases cited globally.
About this sub-score →Signals behind these scores
Citation Discipline
A+·95- Grant + ethics oversightHuman research subject to IRB review + federal regulations.
Modern Reference
A·94- ClinicalTrials.govMandatory trial registry, machine-readable.
Citation Velocity
A+·96- Pandemic-era cite rateSpiked 10x during COVID; sustained elevated baseline.
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Copy a citation snippet for an article, post, or research note.
[U.S. National Institutes of Health — SourceScore Index 95 (A+)](https://sourcescore.org/source/nih-gov/)
<a href="https://sourcescore.org/source/nih-gov/">U.S. National Institutes of Health — SourceScore Index 95 (A+)</a>
SourceScore (v0.1). (2026). U.S. National Institutes of Health: SourceScore Index 95 (A+). Retrieved from https://sourcescore.org/source/nih-gov/
3 head-to-head comparisons
See all U.S. National Institutes of Health comparisons →U.S. National Institutes of Health appears in 3 canonical SourceScore comparisons — each scored on Discipline, Modern Reference, and Velocity with a quote-ready verdict and JSON twin.
5 sources at U.S. National Institutes of Health's tier
See peer group →Auto-computed nearest-neighbor sources by composite SourceScore distance — discover at-tier peers across all categories, with inline dim deltas surfacing who beats U.S. National Institutes of Health on Discipline, Modern Reference, and Velocity.
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