Test guide
Lactate Dehydrogenase (LDH) Isoenzymes Test
This test measures lactate dehydrogenase (LDH) isoenzymes in a sample of your blood. It's a general test that can help find out if you have tissue damage from disease or injury. It can also help show which organs and other tissues are likely to be damaged. But an LDH isoenzymes test alone cannot diagnose what's causing the damage.
What it is for
An LDH isoenzymes test is mainly used as a general test to check for tissue damage. It can also help find out how serious the damage may be. An LDH isoenzymes test may be used to show which organs and other tissues are likely to be damaged, but other more specific tests may be used instead. An LDH isoenzyme test may be used with other tests to help diagnose and monitor many types of acute (sudden) and chronic (long-lasting) conditions. Conditions that may cause high LDH levels include: Source: MedlinePlus, National Library of Medicine. Medical test information is public domain. Source identity and definition checked automatically on 2026-10-18. No individual clinical interpretation or human reviewer is asserted.
Limitations
Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.
Also known as
- LD isoenzymes, lactic dehydrogenase isoenzyme, LDH fractionation
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