The lactate dehydrogenase (LDH) test measures the amount of LDH in the blood.
See also: LDH isoenzymes
The health care provider will take blood from a vein or from your heel, finger, toe, or earlobe.
The blood sample is sent to a laboratory, where it is placed in a machine called a centrifuge. The machine quickly spins the blood, which causes the liquid part (the serum) to separate from the cells. The LDH measurement is done on the serum.
Your health care provider may ask you to stop taking drugs that may affect the test. Drugs that can increase LDH measurements include anesthetics, aspirin, clofibrate, fluorides, mithramycin, narcotics, and procainamide.
LDH is most often measured to check for tissue damage. The enzyme LDH is in many body tissues, especially the heart, liver, kidney, skeletal muscle, brain, blood cells, and lungs.
Other conditions under which the test may be done:
A typical range is 105 - 333 IU/L (international units per liter).
Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
Higher-than-normal levels may indicate:
If the LDH level is raised, your doctor may order an LDH isoenzymes test.
LDH test; Lactic acid dehydrogenase test