Diagnostic testing that may be considered for patients anticipating anesthesia and procedures, for suspected but undiagnosed diseases, or progressive or unstable conditions

Preoperative testing should be performed selectively, based on a patient's medical status, the planned procedure, and the likelihood that test results will change management or inform risk assessment. This table shows tests that may be considered when the clinician suspects an undiagnosed or worsening condition, particularly when there has been no recent evaluation, when no laboratory values are available, and for patients undergoing intermediate to high risk procedures. This table is not meant to suggest that all of these tests should be ordered for all patients with the listed conditions. Importantly, these are not intended as "routine" or screening tests in patients without risk factors. However, with increasing age and comorbidities of surgical patients, organ and metabolic derangements are not uncommon. Diagnosis and management of these conditions may impact perioperative and long term outcomes. This table should be used in conjunction with UpToDate content on preoperative evaluation and testing.