Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

LinkOut Providers

There are two types of LinkOut providers listed below:

  • Full text providers supply links to the full text of specific PubMed citations to their online full-text version of the article. These links may require users to authenticate themselves to gain access.
  • Other providers including datasets and scientific databases supply links to their online resources from specific PubMed citations as well as from other NCBI databases. Authentication may also be required for users to access the resources.

Searches for all records in PubMed and in other NCBI databases with links to a specific LinkOut provider's online resources can be done by appending the provider's abbreviation (case sensitive) to loprov in the search field, e.g. to find all the citations in PubMed with links to the full text of articles published by the American Society for Clinical Investigation (ASCI) on their site, you would add this to your search: loprovASCI[filter].

Listed below are all LinkOut providers for NCBI databases including PubMed and their provider abbreviation in parenthesis.

As of September 30, 2023, there are 733 LinkOut providers.