Critical result: A test result which may signify a pathophysiological state that is potentially
lifethreatening or that could result in significant patient morbidity or irreversible harm or mortality
and therefore requires urgent medical attentionand action.
Significantly abnormal result: A test result that is notlife threatening but that requires a
timely medical attention and follow-up action within a medically justified time-scale.
Alert thresholds: The upper and/or lower threshold of a test result or the magnitude of change
in a test result within a critical or clinically significant timescale beyond which the finding is
considered to be a medical priority warranting urgent or timely action.
Alert list: A list of laboratory tests, including critical tests and noncritical tests with alert thresholds
for critical and/or significantly abnormal results that reflect an agreed policy between laboratory and
clinical staff for rapid communication within a prespecified time frame and according to a procedure.