If you are applying to be guardian or conservator for someone in Minnesota, you will need to complete a background study. You need to complete this particular study, even if you already have background checks done for a job or school or some other purpose. The statute that addresses the Minnesota guardianship background study is Minn. Stat. 524.5-118.
There are limited exceptions, for individuals who will not need a background study. Primarily this includes parents who have lived with a developmentally delayed child since birth, when they are applying to be guardian for the 18th birthday.
The best resource for questions on what the background study entails is the Minnesota Department of Human Services website regarding guardian and conservator background studies.