The US adopted a similar approach to the UK in terms of carrying out major surgical procedures unless haemoglobin was at least 10.4%. Linked evidence RLIT0001025 - HeĢrbert et al Review of the clinical practice literature on allogeneic red blood cell transfusion Canadian Medical Association Journal - 01 Jun 1997 Chronology Information Date: 1 January 1997 Chapter/issue Blood Transfusion: Clinical Practice