Cerebrospinal fluid culture

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Pneumococci organism

A cerebrospinal fluid (CSF) culture is a laboratory test to look for bacteria, fungi, and viruses in the normally clear fluid that moves in the space surrounding the spinal cord.

Culture - CSF; Spinal fluid culture; CSF culture

A sample of CSF is needed. This is usually done with a lumbar puncture. For information on how this procedure is performed, see spinal tap.

The sample is sent to the laboratory, where it is placed in a special dish (called a culture medium). The laboratory personnel watch to see if bacteria, fungi, or viruses grow in the dish. Growth means there is an infection.

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For information on how to prepare for the procedure to obtain the CSF sample, see spinal tap.

For information on how it will feel to have a sample of CSF fluid removed, see spinal tap.

Your doctor may order this test if you have signs of an infection that affects your brain or nervous system. The test will help identify the origin of the infection. This helps your doctor determine the best course of treatment.

Review Date: 08/14/2010
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. 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).