The Upir Toxin, also described as Upir Neurotoxin, is shown in the form of excess sinus in the maxilla of the mouth and is created inside a venom gland. While it has little to no effect on humans, it only has negative effects on other upir, as not many humans bitten by an upir in the show have shown any signs of venom.
LDH or Lactic Acid Dehydrogenase is an enzyme that is found in almost all tissue in the body. It is responsible for converting glucose derived from food into energy. Cells then use this energy in order to function properly. Normal LDH levels in the blood range from 140 IU/liter to 333 IU/ liter.
It is found in almost all body tissues and can be measured by a simple blood test. Normal LDH levels are generally low and range between 140 IU/liter to 333 IU/ liter. Low LDH levels are usually no cause for concern. However, elevated LDH levels may indicate cell damage.