Front loading tests reduce Patient Experience Time (PET) in Emergency Departments (ED). “Blanket” or “scattergun” approach to test requests results in prolonged PET, increase in laboratory workload with wastage of resources. Coagulation studies are one of the most commonly ordered investigations. Previous to the 2020 audit, it was suggested that 70% of ED coagulation requests were unnecessary not changing management. By establishing local guidelines, we worked to reduce coagulation test requests.

The aim of this study was to assess reduction in coagulation tests following implementation of local guidelines in ED. The coagulation indicator checklist was introduced to ED areas storing coagulation bottles. Presentations, small group education, reminders about clinical indications for appropriate coagulation requests were given to nurses, doctors, and advising about audits of practice. From February 1-14, 2022, nurses and doctors were instructed to send coagulation samples after filling out audit forms for the laboratory indicating the purpose of the request.

Prospective data in February demonstrates a 20% decline in coagulation requests. Only 47% of requests had accompanying coagulation forms filled and the remaining 53%was not filled. In 57% of cases, coagulation samples were requested appropriately, and in 43% there were no indications.

Through microsystem interventions and awareness campaigns, unnecessary coagulation requests can be reduced. By introducing local guidelines, regular training of new doctors and nurses at induction and intervals, clinical practice changes can be embedded. Consideration should be given to specific coagulation request forms stating the indication for the request. The cost of each sample is 2.87 euro. Obtaining 90% compliance with coagulation requests can save approximately 100,000 euros annually.