Abnormal coagulation test results in conditions such as acute coronary syndrome can usually be predicted by history, and they rarely affect patient management. Routine coagulation studies in the emergency department therefore represent a substantial added cost, with no benefit to patients. Coagulation studies should be performed based on a history of warfarin or heparin use, or a history of severe liver disease.
Please refer to the joint ACEM/Royal Australian College of Pathologists Guideline on Pathology Testing in the Emergency Department, for further guidance on appropriate pathology test requesting in emergency departments.
* Point of care testing (POCT) devices are unreliable in assessment of snakebite envenomation.