This test measures the level of lactate dehydrogenase (LDH), also known as lactic acid, in your blood or sometimes in other body fluids. LDH is a type of protein, known as an enzyme. LDH plays an important role in making your body's energy. It is found in almost all the body's tissues, including those in the blood, heart, kidneys, brain, and lungs.

When these tissues are damaged, they release LDH into the bloodstream or other body fluids. If your LDH blood or fluid levels are high, it may mean certain tissues in your body have been damaged by disease or injury.

Other names: LD test, lactic dehydrogenase, lactic acid dehydrogenase


For the detection of conditions that may cause tissue damage and to monitors its progress. Testing helps, determine prognosis, and/or determine the appropriate treatment of certain cancers. For the evaluation of body fluids other than blood


Your healthcare provider will order this test if there is reason to suspect you have an acute or chronic condition causing tissue damage or cellular destruction. With certain cancers, your doctor may order this test. Your doctor may order this test if symptoms of meningitis are present or if you have fluid accumulation in a specific part of your body.

    • Why do I need this test?


    • You may need this test if other tests and/or your symptoms indicate you have tissue damage or disease. Symptoms will vary depending on the type of tissue damage you have.


  • You may also need an LDH test if you are currently being treated for cancer.
Lactate Dehydrogenase (LDH)

Lactate Dehydrogenase (LDH)

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