Anemia. 'Low blood' points to an underlying problem.
D000740:Anemia / Q000175:diagnosis* / Q000628:therapy*; D000743:Anemia, Hemolytic / Q000175:diagnosis / Q000628:therapy; D000747:Anemia, Hypochromic / Q000175:diagnosis / Q000628:therapy; D000749:Anemia, Megaloblastic / Q000175:diagnosis / Q000628:therapy; D000752:Anemia, Pernicious / Q000175:diagnosis / Q000628:therapy; D001772:Blood Cell Count; D001792:Blood Platelets; D001853:Bone Marrow / Q000503:physiopathology; D004906:Erythrocyte Count; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D007501:Iron / Q000378:metabolism
D007501:Iron