What is a 'critical value' in laboratory results and what is the required workflow for reporting it?

• A. A critical value is any abnormal result; report within 24 hours.
• B. A critical value is a result that indicates a life-threatening situation; immediately notify the responsible clinician, document the time of call and the clinician's response, and follow facility protocol.
• C. A critical value is a value that is out of reference range; no immediate action required.
• D. A critical value is a routine result; file in patient chart.

Answer: (B)