Many colleges offering degrees in Russian have a graduation goal of an ACTFL of intermediate for their students. If the student earns a level beyond that with LTI, that would mean that those schools would not even offer Russian language courses for that student’s level. (I have been researching universities for months bc my dd wants to major in Russian and French and is at or beyond that level already.) Goodness, a 640 on a subject test will place you out of FL requirements at many top schools.
The student needs to contact specific schools and find out directly from them.