Healthcare MarketsHM Company NewsLaingBuisson Newsletter Archives Turnover down but margins up at Quest By LaingBuisson - 11th November 2014 FacebookTwitterPinterestWhatsAppLinkedin Quest Diagnostics has reported a 20% drop in turnover to £40.6m for the year ended 31 December 2013. You must be a HM Subscriber to view this content. Login » Subscribe Now »