Genealogy / Where to DNA test myself if I'm related to Doliwa? [5]

Hi everybody I hope you can help me. My name is igor dobrowolski and I've been told many times by my father that we are related to the Baron family named Doliwa. Problem is that all the documents and letters of nobility I mean everything was lost or destroyed and ceased by Russian troops when they moved in after the Germans left. My grand mother was even called "The last aristocrat of the family" so I'm thinking if there's any way of finding out by using DNA testing?

Thank you in advance.