 Research Resource Identifiers

Persistent identifiers for the resources behind research.

RRIDs identify the antibodies, cell lines, organisms, plasmids, software and core facilities a study used, so anyone can find exactly what was used and check it.

How to cite an RRID

1.4 million

RRIDs in 150,000+ papers across 4,000+ journals (October 2026)

4M+

citable resources: 3M antibodies, 1M organisms, 250K cell lines, 25K tools and projects

Free & open

to cite, resolve and reuse, owned by a nonprofit

Built intoORCID works metadataEurope PMCDataCite Schema 4.6ROR facility guidanceJATSAfrica PID Alliance DOCiDbioRxiv Key Resource Tables

Start here

What RRIDs mean for your role, and what to do next.

Publishers & editors

Author instructions, JATS tagging and checks at submission.

Policy templates

Researchers

Find the RRID for a resource and cite it in your methods.

How to cite

Core facilities & institutions

Register your facility and see where it is cited.

Register a facility

Funders

Ask grantees to cite resources and track what you fund.

Policy language

Vendors & authorities

Put RRIDs in your catalogue and keep records current.

Become an authority

Governance

Owned by a nonprofit, free for everyone.

RRIDs are owned by RRIDs.org, an independent 501(c)(3) nonprofit, and are free to use. SciCrunch operates the RRID Portal on its behalf. RRIDs also resolve through n2t.net and identifiers.org, independently of any one operator.

Meet the boardPOSI self-assessment: coming

RRIDs.org

Owns the identifiers. Sets policy on resource types and authorities.

SciCrunch

Operates the RRID Portal (rrid.site) under an agreement.

Authorities

Antibody Registry, Cellosaurus, MGI, Addgene and others keep their records.

Resolvers

n2t.net (California Digital Library) and identifiers.org.