Lead Based Paint testing. Is this a requirement?

[Samuel J Claeson]

If I own a multifamily home that was built before 1978, is it required that the property is tested for lead based paint?  

The lease that I am using is as up date date as any lease for the State of Minnesota, and it includes "Lead paint warning and disclosure. Housing built prior to 1978." I will be giving my tenants a "Protect Your Family from Lead in Your Home" pamphlet that was created by the EPA. However, I am unsure if it is required that I get the property tested for lead and give the report to my tenants? 

Any information would be greatly appreciated!

-Sam