Do not forget inherited privileges, you have to check which ROLES have been granted to the account then check which privileges are granted to the user thru those ROLES.
You may also want to check for system privileges like select any, insert any, etc.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.