The Lactate Dehydrogenase (LDH), Serum Test is a blood test that measures the level of Lactate Dehydrogenase (LDH) enzyme in the bloodstream. LDH is found in almost all body tissues and is released into the blood when cells are damaged or destroyed.
This test helps evaluate tissue injury, inflammation, infections, anemia, liver conditions, muscle damage, and certain blood disorders.
1.LDH (Lactate Dehydrogenase)
Measures the level of the LDH enzyme in the blood. LDH is released when cells are damaged, so it helps evaluate tissue injury, liver conditions and blood cell breakdown.
Also known as: LDH Blood Test, Lactate Dehydrogenase Blood Test, Serum LDH Test
The LDH Serum Test measures the amount of lactate dehydrogenase enzyme present in the blood. LDH plays an important role in converting sugar into energy within cells.
Since LDH is present in many organs and tissues, increased levels may indicate damage or stress affecting different parts of the body.
Doctors usually interpret LDH results along with other tests and clinical symptoms to identify the possible source of tissue injury.
The LDH Test measures the concentration of Lactate Dehydrogenase in the blood.
LDH is present in:
When cells are damaged, LDH can leak into the bloodstream, causing increased LDH levels.
The test helps evaluate:
Doctors may recommend an LDH Serum Test to:
The test may be advised if you experience:
Benefits of the LDH Serum Test:
An LDH Serum Test may be recommended for:
The LDH Test requires a blood sample collected from a vein.
Before the test:
| Parameter | Normal range |
|---|---|
| LDH (Lactate Dehydrogenase), Serum | Approximately 140–280 U/L |
| General interpretation | |
| Normal LDH | No significant increase in cellular injury detected |
| Mildly Elevated LDH | May occur due to minor tissue stress, infection, or inflammation |
| High LDH | May indicate tissue damage, red blood cell breakdown, liver conditions, muscle injury, or other medical causes |
| Note | Reference ranges may vary between laboratories based on testing methods, age, and clinical conditions. LDH results should always be interpreted along with other investigations. |
Reference ranges can differ between labs. Your report shows the range used by the lab.
An LDH Serum Test measures the level of Lactate Dehydrogenase enzyme in the blood to help identify possible tissue damage or cell injury.
No, fasting is usually not required for an LDH blood test.
High LDH levels may indicate increased cell damage or breakdown somewhere in the body. Additional tests may be required to identify the exact cause.
No. Since LDH is present in many tissues, it indicates possible cell injury but does not identify the exact source by itself.
| Test name | Lactate Dehydrogenase (LDH), Serum Test |
|---|---|
| Location | Orai |
| Sample type | Blood |
| Number of parameters | 1 |
| Home sample collection | Available |
| Fasting | Not required |
| Report time | As per laboratory processing time |
| Recommended age | 5–99 years |
| Suitable for | Male & Female |
LDH may increase when liver cells are damaged and can provide additional information along with liver enzymes such as ALT and AST.
Yes. Intense exercise can temporarily increase LDH levels due to muscle stress.
LDH may be used as a supportive marker in monitoring certain cancers, but it cannot diagnose cancer on its own. Further evaluation is required.
