Lactate Dehydrogenase (LDH) details
What Lactate Dehydrogenase (LDH) shows
Lactate dehydrogenase (LDH) is an enzyme found in nearly every tissue in the body, so it's released into the bloodstream whenever cells anywhere are damaged, making it a very general, nonspecific marker of tissue injury. It's used alongside other, more specific tests to help investigate a range of conditions, including certain cancers (where it can reflect tumor burden or turnover), red blood cell breakdown (hemolysis), muscle injury, liver disease, and heart or lung tissue damage. Because so many different things can raise LDH, an abnormal result nearly always prompts more targeted testing based on your specific symptoms.
Normal ranges
Typical adult range
100–200 IU/L
Most labs report a range close to this
Hormunity optimal range
140–200 IU/L
A narrower functional target
Each lab sets its own reference range. Always compare your result with the range printed on your report, and review it with a healthcare provider.
Tests that include Lactate Dehydrogenase (LDH)
This test measures lactate dehydrogenase (LDH), an enzyme found in many body tissues. Elevated serum levels of LDH have been observed in a variety of disease states.
- Lactate Dehydrogenase (LDH) An enzyme found in many tissues, released when cells are damaged. A general marker used alongside other tests to investigate tissue injury, certain cancers, or red blood cell breakdown.
This test measures lactate dehydrogenase (LDH), an enzyme found in many body tissues. Elevated serum levels of LDH have been observed in a variety of disease states.
- Lactate Dehydrogenase (LDH) An enzyme found in many tissues, released when cells are damaged. A general marker used alongside other tests to investigate tissue injury, certain cancers, or red blood cell breakdown.
This panel measures lactate dehydrogenase isoenzymes. Lactate dehydrogenase (LD) is an enzyme found in almost all of the body's cells; elevated levels of this enzyme can be used as a general marker of cell injury. LD isoenzymes are used to determine the source of elevated LDH activity, as each isoenzyme tends to be concentrated in specific body tissues.
- Lactate Dehydrogenase (LDH) An enzyme found in many tissues, released when cells are damaged. A general marker used alongside other tests to investigate tissue injury, certain cancers, or red blood cell breakdown.
- Lactate Dehydrogenase Isoenzyme 1 (LD1) A specific form of LDH found mainly in heart muscle and red blood cells, historically used to help detect heart or blood-cell damage.
- Lactate Dehydrogenase Isoenzyme 2 (LD2) A specific form of LDH found mainly in the immune system and red blood cells.
- Lactate Dehydrogenase Isoenzyme 3 (LD3) A specific form of LDH found mainly in the lungs and other organs.
- Lactate Dehydrogenase Isoenzyme 4 (LD4) A specific form of LDH found mainly in the kidneys, placenta, and pancreas.
- Lactate Dehydrogenase Isoenzyme 5 (LD5) A specific form of LDH found mainly in the liver and skeletal muscle.
This panel measures lactate dehydrogenase isoenzymes. Lactate dehydrogenase (LD) is an enzyme found in almost all of the body's cells; elevated levels of this enzyme can be used as a general marker of cell injury. LD isoenzymes are used to determine the source of elevated LDH activity, as each isoenzyme tends to be concentrated in specific body tissues.
- Lactate Dehydrogenase (LDH) An enzyme found in many tissues, released when cells are damaged. A general marker used alongside other tests to investigate tissue injury, certain cancers, or red blood cell breakdown.
- Lactate Dehydrogenase Isoenzyme 1 (LD1) A specific form of LDH found mainly in heart muscle and red blood cells, historically used to help detect heart or blood-cell damage.
- Lactate Dehydrogenase Isoenzyme 2 (LD2) A specific form of LDH found mainly in the immune system and red blood cells.
- Lactate Dehydrogenase Isoenzyme 3 (LD3) A specific form of LDH found mainly in the lungs and other organs.
- Lactate Dehydrogenase Isoenzyme 4 (LD4) A specific form of LDH found mainly in the kidneys, placenta, and pancreas.
- Lactate Dehydrogenase Isoenzyme 5 (LD5) A specific form of LDH found mainly in the liver and skeletal muscle.
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