I m having blood work done. Can you explain CBC w/Diff (Hgb, Hct, RBC, WBC, Pit, Diff)? I m scared they said my white blood count was off the chart down. My father just passed away in April 23, 2016 suddenly with lung cancer. We took him to the hospital on Sunday and he passed away on the following Saturday. So I had blood work done and this is the new order my primary ordered. Thank you, Brandon