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From Radiometer Medical ApS:
"Preanalytical errors are said to be the reason for up to 75% of all errors in laboratory medicine. The diagnostic consequences depend on the magnitude of the preanalytical error. In worst case, these errors may lead to mistreatment of patients; in all cases, these errors are an extra workload for the hospital staff involved."  This app focuses on the preanalytical phase of blood gas testing and what operators can do to avoid errors. The recommendations are based on existing literature and international best practices. The content provided here is owned and maintained by Radiometer Medical ApS, a Danish limited liability company with its registered office at kandevej 21, 2700 Brnshj, Denmark ("Radiometer"). For more information on Radiometer, go to www.radiometer.com  Wennecke, Gitte: Useful tips to avoid preanalytical errors in blood gas testing http://www.acutecaretesting.org - Oct 2003.