Blood lactate analyzers or blood lactate testing equipment are machines that test lactate levels in blood. A blood lactate analyzer is used in as a diagnostic tool. High lactate levels can be caused by shock, anemia, sepsis, malignancy, diabetes, or toxicity caused by carbon monoxide or acetaminophen. A blood lactate analyzer can provide a quick and simple way to check the lactate levels in a patient. In athletic training, lactate levels can show when exercise changes from aerobic to anaerobic, what an individual's heart rate training zone and recovery time are, and how an athlete's body responds to each workout. Some differences between blood lactate testing equipment include time to results, sample size needed, capacity of test results storage, operating altitude and temperature ranges, and sample type (plasma or whole blood).