Can I do this?

I need only 291 for MCSA but have been studying for 2008 for a little while now. While it's more fresh on my mind, I would like to take the MCSA upgrade exam for MCITP, 70-648. Can I take that exam and then finish 291? Do test centers/microsoft allow you to go out of order like that?
Thanks for your time.
Thanks for your time.
Comments
Although MS might let you take any exam you want so they can make some money
M.B.A. (Technology Management)