Is it possible to isolate DNA from bone marrow with the QIAamp DNA Blood Kits?
FAQ ID -563

Yes. Please follow the Blood and Body Fluid Spin Protocol in the QIAamp DNA Mini and QIAamp DNA Blood Mini Kit Handbook. No more than 5 x 106 cells should be used. When using the Midi or Maxi format, please follow the protocol for Isolation of DNA using the QIAamp DNA Blood Midi or Maxi Kit in the QIAamp Blood Midi and QIAamp Blood Maxi Handbook. The maximum number of cells to use is 2 x 10and 1 x 108, respectively.