Lactate is produced when tissues switch from aerobic to anaerobic metabolism due to inadequate oxygen delivery. Elevated lactate signals serious illness, particularly sepsis, shock, mesenteric ischemia, severe heart failure, and other critical conditions. Trending lactate over time helps assess response to treatment.
This test is widely used in emergency departments and ICUs to evaluate critically ill patients, guide resuscitation, assess severity in sepsis, and monitor treatment response. Sample handling on ice with prompt processing is required for accurate results. Sample type is plasma.