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Lymph node culture

Definition

Lymph node culture is a laboratory test performed on a lymph node to identify organisms (bacteria, viruses, and fungus) that cause infection.

Alternative Names

Culture - lymph node

How the Test is Performed

A needle aspiration or biopsy of an enlarged lymph node (swollen glands) is obtained. The fluid is placed in culture media and observed for growth in the laboratory. Sometimes special stains are also done.

How to Prepare for the Test

There is no special preparation necessary.

How the Test Will Feel

The site may be numbed with a local anesthetic before the node is aspirated. There may be some pain when the needle is inserted into the lymph node.

Why the Test is Performed

The test may be performed if the cause of swollen glands is not known, and infection is suspected.

Normal Results

No growth is normal.

What Abnormal Results Mean

Abnormal results indicate that infectious microorganisms, such as bacteria, viruses, or fungus are present.

Suspicion of atypical mycobacterial infection is an additional condition under which the test may be performed.

Risks

There is a risk of bleeding or infection.

Considerations

Not applicable.


Review Date: 2/10/2006
Reviewed By: Kenneth Wener, M.D., Division of Infectious Diseases, Beth Israel Deaconess Medical Center, Boston, MA. Review provided by VeriMed Healthcare Network.
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