RT Journal Article SR Electronic T1 Unnecessary repeat requesting of tests: an audit in a government hospital immunology laboratory JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 457 OP 462 DO 10.1136/jcp.2004.021691 VO 58 IS 5 A1 Kwok, J A1 Jones, B YR 2005 UL http://jcp.bmj.com/content/58/5/457.abstract AB Unnecessary repeat requesting of tests can make up a large proportion of a laboratory’s workload. This audit set out to establish the size of this problem and to identify the circumstances under which these repeat requests were made in a government tertiary hospital immunology laboratory. The numbers of tests for immunoglobulin measurement, common autoantibodies, and tumour markers that were repeated over a 12 month period were analysed by interrogating the Delphic laboratory computer system using a management information system for raw data enquiry protocol. Repeat requests within 12 weeks of a previous request made up 16.78% of the total workload. The total cost of the tests was estimated at US$ 132 151. The waste of technician time and reagents as a result of unnecessary repeat testing is excessive. Many of these tests might be eliminated with the use of interventions such as computerised reminders.