The Doctors Laboratory (parent company Australia’s diagnostic company Sonic Healthcare) which provides clinical pathology services to the private and state sectors, for the year ended 30 June 2011 showed a profit before tax of £9.7m (2010: £8.3m) against sales of £41.3m (2010: £40.7m). Administrative expenses had fallen to £6.4m from £7.8m in 2010. The company…