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Interlibrary Loan

Following Office of Personnel Management guidance on Coronavirus Disease (COVID-19) and recommendations from the CDC, the National Library of Medicine print collection will be unavailable for interlibrary loan (ILL) fulfillment starting Thursday, March 19, 2020 at 8am, until further notice. During this period NLM will continue to provide ILL services from electronic resources.

During this period, NLM online resources will remain available, including NLM Digital Collections ( and PubMed Central ( If you have questions or concerns about your article request, please use Contact Us (if a DOCLINE library) or the Customer Service Form.

Academic, public, and special libraries that are not DOCLINE members and that have established an interlibrary loan account with the National Library of Medicine (NLM) may submit their requests through the NLM web request portal. To request an account or inquire about an existing account, contact ILL.

Keep in mind that NLM is the library of last resort for biomedical materials that are not available elsewhere.  All interlibrary loan requests submitted through the portal must include complete citation information including the NLM Unique ID from LocatorPlus.

For DOCLINE participants, NLM serves as a source for material not available through local, state, or regional libraries.  For information about joining DOCLINE, please review the eligibility guidelines or contact your DOCLINE Coordination Office.

For questions about NLM’s interlibrary loan service, please contact NLM. NLM's preferred delivery methods are email and post-to-web.

Individuals who need access to medical literature should make a request through a local library.

Last Reviewed: June 16, 2021