Description: LabCorp, a large health care diagnostics company, offers many general medical laboratory tests.Nevada County Location: Grass Valley - 104 Catherine Ln, Grass Valley, CA 95945Placer County Location: Auburn - 11930 Heritage Oak Pl Ste 7, Auburn, CA 95603 Location: Rocklin - 6815 Five Star Blvd Ste 105, Rocklin, CA 95677 Location: Roseville - 1730 Santa Clara Dr, Roseville, CA 95661