Lactate

This test measures the level of lactate, also called lactic acid, in a sample of your blood. In certain cases, cerebrospinal fluid (CSF) may be used. Normally, you have low levels of lactate in your blood and CSF. High levels of lactate may be a sign of a wide variety of medical conditions.

A lactate blood test is most often used to diagnose lactic acidosis and find out how severe it is. It can also help evaluate and monitor many types of medical conditions that may make lactate levels rise.