HI, I was wondering if you know anything about enlarged or low red blood cells in relation to low back pain in males. After having a bone marrow test, the white blood cells either became low or high. This is for my friend s Dad so I don t know the details, but everything is checking out fine everywhere else....Kidneys, colon, liver, spleen are all okay. I know this is really vague, but any hunches you might have would be helpful and appreciated. Thanks.