Culture - joint fluid

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Joint aspiration

Joint fluid culture is a laboratory test to detect infection-causing organisms in a sample of fluid surrounding a joint.

Joint fluid culture

A sample of joint fluid is needed. This may be done in a doctor's office using a needle, or during an operating room procedure. For more information on this procedure, see joint fluid aspiration.

The fluid sample is sent to a laboratory where it is placed in a special dish and watched to see if bacteria, fungi, or viruses grow. This is called a culture.

If such microorganisms are detected, other tests may be done to further identify the infection-causing substance and determine the best treatment.

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There is no special preparation needed for the lab culture. For information on preparing for the removal of joint fluid, see joint fluid aspiration.

The joint fluid culture is done in a laboratory and does not involve the patient.

For information on how the procedure to remove joint fluid feels, see joint fluid aspiration.

Your doctor may order this test if you have unexplained pain and inflammation of a joint or a suspected joint infection.

Review Date: 12/01/2009
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; Jatin M. Vyas, MD, PhD, Assistant Professor in Medicine, Harvard Medical School, Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).