List of longest-running television shows by category. This is a list of the longest-running television shows by category. The criterion for being the longest-running show is by the number of years the show has been on the air and not the number of episodes produced. List of longest-running United States television series.
blood lactate. lactic acid that appears in the blood as a result of anaerobic metabolism when oxygen delivery to the tissues is insufficient to support normal metabolic demands. blood. the red fluid that circulates through the heart, arteries, capillaries and veins carrying nutrients and oxygen to the body tissues and metabolites away from them.
1 CSF lactate dehydrogenase (LD) â used to differentiate between bacterial and viral meningitis; the level is usually increased with bacterial meningitis and not with viral meningitis; may also be elevated with leukemia or stroke.