Lactic Acid Dehydrogenase (LDH)
Lactic acid dehydrogenase (LDH) is an enzyme that helps produce energy. It is present in almost all of the tissues in the body and becomes elevated in response to cell damage. LDH levels are measured from a sample of blood taken from a vein.
Why It Is Done
Lactic acid dehydrogenase (LDH) is an enzyme that helps produce energy. Results may vary widely from lab to lab.
Normal LDH levels range from 140 units per liter (U/L) to 280 U/L or 2.34 mkat/L to 4.68 mkat/L.
What To Think About
Many diseases can cause elevations in LDH levels. Other tests are usually needed to confirm a diagnosis.
eMedicineHealth Medical Reference from Healthwise
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