text: On blood tests, an elevated level of lactate dehydrogenase usually indicates tissue damage, which has multiple potential causes, reflecting its widespread tissue distribution:
  *Hemolytic anemia
  *Vitamin B12 deficiency anemia
  *Infections such as infectious mononucleosis, meningitis, encephalitis, HIV/AIDS. It is notably increased in sepsis.
  *Infarction, such as bowel infarction, myocardial infarction and lung infarction
  *Acute kidney disease
  *Acute liver disease
  *Rhabdomyolysis
  *Pancreatitis
  *Bone fractures
  *Cancers, notably testicular cancer and lymphoma. A high LDH after chemotherapy may indicate that it has not been successful.
  *Severe shock
  *Hypoxia
  Low and normal levels of LDH do not usually indicate any pathology. Low levels may be caused by large intake of vitamin C.
  LDH is a protein that normally appears throughout the body in small amounts.