300 Longwood Avenue Boston, MA 02115 (617) 355-6000 Clinical Services (Histiocytosis): Diagnosis Some diagnostic tests your child may receive to check for the presence of abnormal and excessive immune cells include: Biopsy of affected tissue, such as bone, bone marrow, skin, lymph node and/or liver Blood samples including blood counts, tests of liver and/or immune system function Urine analysis X-rays of bones (also called "skeletal survey") Bone scan Imaging of head (CT and/or MRI scan) Genetic tests (if indicated) The information on this website should not be taken as medical advice, which can only be given to you by your personal health care professional. Copyright © Children's Hospital Boston. All rights reserved.