RT Journal Article SR Electronic T1 Lactic acidosis expediting a diagnosis of acute lymphoblastic leukaemia JF BMJ Case Reports FD BMJ Publishing Group Ltd SP bcr0220091601 DO 10.1136/bcr.02.2009.1601 VO 2009 A1 Heather Young A1 Salil Singh A1 Brigit Fiona Greystoke A1 Robert Paul Willert YR 2009 UL http://casereports.bmj.com/content/2009/bcr.02.2009.1601.abstract AB We report the finding of a low venous bicarbonate and lactic acidosis in a patient with mild pancytopenia which raised the suspicion of haematological malignancy and expedited the diagnosis of acute lymphoblastic leukaemia. This report highlights the value of testing for lactic acidosis when haematological malignancies are considered and reviews the metabolism of lactic acidosis.