How can I replace a missing IKEA drawer slide?

I am missing one part of the drawer runner on one of my pieces of ikea furniture. It's the leftmost one in this picture, the part of the runner that attaches to the drawer itself:

Are drawer runners standardized to a degree that I can find a matching replacement part that wasn't specifically made for this piece of IKEA furniture? Or should I remove both parts of the runner from that one side of the drawer and replace with a new runner?