Materials not owned by UDM Libraries may be requested through the Interlibrary Loan service. Depending on the delivery method, interlibrary loans may take 2-6 weeks. University of Detroit Mercy faculty, staff, and currently registered students in good standing are authorized to use this service. For students enrolled in classes that do not meet on the McNichols or Corktown campuses, electronic delivery will be used unless barred by license restrictions.

Interlibrary Loan (ILL) is a service provided to obtain materials from other libraries for study and research that are not otherwise available in UDM's collections. The conditions of this service are set by the National Interlibrary Loan Code, 1993 (adopted by the American Library Association), local agreements, and the regulations of individual libraries.