What is the process to assign Lexile measures to books that do not already have a Lexile?

If a customer cannot find a book's Lexile in LitPro, they can go to www.lexile.com and enter the title, author, or ISBN to find its Lexile. If the title cannot be found there, the title will need to be submitted to MetaMetrics for analysis. The customer can put in a request for a title at http://www.lexile.com/requestlexile.