In modern times, however, the vampire is generally held to be a fictitious entity, although belief in similar vampiric creatures such as the chupacabra still persists in some cultures.
Lactate dehydrogenase (LDH) is an enzyme that helps facilitate the process of turning sugar into energy for your cells to use. LDH is present in many kinds of organs and tissues throughout the body, including the liver, heart, pancreas, kidneys, skeletal muscles, brain, and blood cells. When illness or injury damages your cells, LDH may be released into the bloodstream, causing the level of LDH in your blood to rise.
You may also have a lactate dehydrogenase isoenzyme test. Your total LDH is made up of 5 isoenzymes numbered LDH-1 through LDH-5. The concentration of each isoenzyme depends on the tissue. For example, LDH-1 and LDH-2 are found mainly in heart tissue. LDH-5 is found mostly in the liver. A higher than normal total LDH means possible tissue damage. Your healthcare provider might order a lactate dehydrogenase isoenzyme test to find out which tissue is damaged or diseased.