Can I ask for a letter of recommendation right as I am leaving?

[jpmangogg]

Can I ask a professor who I am working with in the lab for a letter of recommendation right as I am leaving the lab? Like I would notify her that I will no longer be working with her with a month's notice, and then possibly asking for the letter a couple weeks after I leave.

Or would this be rude?

Edited October 27, 2013 by jnnguyen2

[fuzzylogician]

Are you leaving on good terms? If so, I don't think there should be any problem with that.