THE DELTA CHECK IN ACTION: CAUSES AND CONSEQUENCES OF DISCREPANT LABORATORY RESULTS

Course overview

Discrepant results are often identified by delta check alerts. Delta checks compare current laboratory results to previous results; if the difference between the two values exceeds predetermined biological limits (within a predetermined length of time), a technologist is alerted and the discrepancy can be investigated further. Causes of discrepant laboratory results include both preanalytical and analytical issues, as well as true biological changes occurring within the patient. Many preanalytical issues cannot be detected by traditional QC methods, leading to the possible reporting of erroneous laboratory results. The wrong result compromises patient care by leading to inappropriate diagnoses or treatment. Delta check alerts provide an additional means to identify these types of problems, in addition to alerting health care providers to true changes in their patient¿s condition.