Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

This is a preview of updates coming to the Technical Bulletin's website in April 2026. Return to current site.
Read more about the modernization release schedule in this announcement.
Comment via the yellow feedback button in the lower right hand corner of the page. Contact the NLM Help Desk with any questions or concerns.

This is archived content.

Links may have become inactive over time. Visit Archive-It   to find the original published layout.

MEDLINE Milestone: 30 Millionth Journal Citation

MEDLINE Milestone: 30 Millionth Journal Citation. NLM Tech Bull. 2022 Nov-Dec;(449):b14.

December 12, 2022 [posted]

On December 7, 2022, MEDLINE attained a major milestone when the 30 millionth journal citation was added to the database. This count includes citations created from the OLDMEDLINE project.

This PubMed search retrieves the running count for MEDLINE, which is currently over 30 million citations:

medline [sb]

This PubMed search retrieves the running count for MEDLINE minus the OLDMEDLINE subset, which is currently over 27 million citations:

medline [sb] NOT jsubsetom