Is there anything I can call from the command line which will tell me if the currently logged in user has a limited account or is an admin?
With the default command tools (no third party downloads) you can use the net command.
To display information about the current logged on user. The last section of this shows:
Hope this helps
What I do most of the time is in the command prompt:
Then, I check in the user/admin groups
You can also check with the PSTools. There is a lot you can do remotely within a domain with this!