Anyone know a place that does VO2 max testing on a bike? I have bad knees and can't run on a treadmill...

I need this for a school project, I know I could make it up but I feel like it would be nice to know using a more precise method then the 2 mile run the teacher suggested.

If you've had it done please include as much info as possible, thanks!!! (ex: price, website, location, how long did it take, any other tests offered - body fat, etc.)

THANKS