LDH test Lab Test

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    What is LDH?

    LDH is an enzyme that nearly all living cells have. LDH is responsible for catalyzing the conversion of lactate to pyruvic acid and back. In simple terms it converts sugar into energy in the body.

    How can we help?

    With Portea, you can now take the LDH test right at your home. The LDH lab test reports will be delivered to your doorstep as well. Our team of medical experts can guide you to help you understand what is the best course of treatment if your LDH level is high. Give us a call and experience world-class medical treatment at home. 

    Causes of raised LDH

    As mentioned above, one of the reasons for elevated LDH levels is tissue damage. Other causes of raised LDH levels could be:

    • Liver disease
    • Heart Attack
    • Anemia
    • Muscle trauma
    • Bone fractures
    • Cancers
    • Infections such as meningitis, encephalitis and HIV

    What is LDH test?

    The LDH test measures the LDH level in your blood. Sometimes other body fluids are also measured to help detect specific conditions. 

    Why should you take the LDH test?

    This LDH test will help your doctor diagnose if you have tissue damage, monitor its progress and determine whether treatment is working. This can also help monitor and help in diagnosis of certain cancers. The body fluid(not blood) levels can also be evaluated through the LDH test.  

    How to prepare for the LDH test?

    In general, no special preparation is required but please consult your doctor before undertaking this test.

    Elevated LDH levels

    If you happen to have elevated LDH levels, it may indicate some form of tissue damage. This is because when tissues are damaged they release more LDH causing the LDH levels to be elevated in your bloodstream.

    What are the risks associated with getting a LDH blood test or a serum LDH test?

    For the LDH blood test, in rare cases you may experience:

    • Bleeding
    • Brusing
    • Infection
    • Soreness

    If a lumbar puncture was performed, you may experience:

    • Headache
    • Infection
    • Bleeding
    • Numbness

    LDH lab test report

    If the LDH blood levels are elevated, it usually indicates some type of tissue damage. It could mean that you have:

    • Hemolytic anemia
    • Pernicious anemia
    • Infections
    • Sepsis
    • Intestinal and lung infarction
    • Acute kidney disease
    • Acute liver disease
    • Acute muscle injury
    • Pancreatitis
    • Bone fractures
    • Testicular cancer, lymphoma or other cancers



    The LDH blood levels if elevated can also indicate that your body is not responding to treatment for cancer. 

    LDH normal range

    The LDH normal range at different ages:

    • Newborns: 160-450 U/L
    • Infants: 100-250 U/L
    • Children: 60-170 U/L
    • Adults: 100-190 U/L

    For cerebrospinal fluid, the normal range for newborns is 70 U/L and for adults is 40 U/L.

    High LDH levels may indicate an infection or inflammation in the central nervous system. 

    Elevated LDH does not necessarily mean that there is something wrong. Your doctor is the only one who should interpret the results and he/she may even order more tests such as ALT, AST or ALP to be sure of the diagnosis. 

    High LDH treatment

    High LDH treatment includes a lot of self-care. Physical exercise and low fat diet is a must. Your doctor may also prescribe medications such as LDH total and refer you to specialists to take care of the specific underlying causes.  

    What are the different LDH tests?

    LDH blood test

    This test alone is not sufficient to determine where the tissue damage is.

    Serum LDH test

    The serum LDH test is more specific and can help determine the cause of elevated LDH levels. 


    1. https://labtestsonline.org/tests/lactate-dehydrogenase-ld
    2. https://kidshealth.org/en/parents/test-ldh.html
    3. https://medlineplus.gov/ency/article/003471.htm