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Home Knowledge Center Wellness Library Lactic Acid Dehydrogenase (LDH) Test

Lactic Acid Dehydrogenase (LDH) Test

Test Overview

Lactic acid dehydrogenase (LDH) is an enzyme that helps produce energy. It is present in almost all of the tissues in the body and its levels rise in response to cell damage. LDH levels are measured from a sample of blood taken from a vein.

Why It Is Done

Why It Is Done

LDH levels help find the cause of lung disease, lymphoma, anemia, and liver disease. They also help find out how well treatment for lymphoma is working.

 How To Prepare

How To Prepare

In general, there's nothing you have to do before this test, unless your doctor tells you to.

 How It Is done

How It Is done

A health professional uses a needle to take a blood sample, usually from the arm.

How long the test takes

The test will take a few minutes.

 Results

Results

Each lab has a different range for what's normal. Your lab report should show the range that your lab uses for each test. The normal range is just a guide. Your doctor will also look at your results based on your age, health, and other factors. A value that isn't in the normal range may still be normal for you.

Many diseases can cause LDH levels to go up. Other tests are usually needed to confirm a diagnosis.

For many healthy people, a slightly high LDH isn't serious. It can happen because of exercise or because of a technical problem with the test.

Current as of: April 30, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Ignite Healthwise, LLC education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

This information does not replace the advice of a doctor. Ignite Healthwise, LLC, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.

To learn more about Ignite Healthwise, LLC, visit webmdignite.com.

© 2024-2025 Ignite Healthwise, LLC.

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