附院检验科 Clinical laboratoryoffrs affiated hospital The clinician's main task is to make decisions about patient care despite clinical information and uncertainty about clinical outcomes. Although data elicits from the history and physical examination are often sufficient for making a diagnosis or for guiding therapy,more information may be required.In these situations,clinicians often turn to diagnostic tests for help.• The clinician’s main task is to make decisions about patient care despite clinical information and uncertainty about clinical outcomes. Although data elicits from the history and physical examination are often sufficient for making a diagnosis or for guiding therapy, more information may be required. In these situations, clinicians often turn to diagnostic tests for help