The Bayern Munich and Germany captain has earned huge praise for his performances in a central midfield role at die Roten in recent weeks, in the absence of Javi Martinez.
Low said he doesn't want to be drawn on talk of Lahm's midfield role, preferring instead to praise his fullback expertise.
"He is the best fullback in the world. I don't want to open a new discussion," Low told reporters. "Maybe he is the only player in Germany who can play everywhere. You put him in one position and he does it well."
Low also discussed the potential call up of Bayer Leverkusen striker Stefan Kiessling, saying there is no reason why he won't have a change of heart and recall him to the Germany squad.
"If necessary I do have Stefan's number, and I don't have a problem changing my opinion," he added. "I know I can come back to him, thats why I didn't close the door."