question: My daughter is in the hospital right now with abdominal pain. She does have anemia and her b12 levels are low.  She had gastric bypass about 9 years ago and since has had a foot of her small intestin removed  and  hernia surgeries  She complains of pain constantly and the doctors said that she does have scar tissue that is causing the pain.  They ordered a RBC6 blood test what is this test?