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Alternative names Return to top
Culture - CSF (cerebral spinal fluid); Spinal fluid cultureDefinition Return to top
CSF culture is a test used to detect the presence of microorganisms (bacteria, viruses, and fungus) in the cerebrospinal fluid (CSF) causing infection. CSF is a clear fluid that circulates in the space surrounding the spinal cord.
The CSF protects the brain and spinal cord from injury and physical shocks, and carries products of neurosecretions (chemicals released by the neural tissue), chemicals in the cells, and chemical changes in the cells.
How the test is performed Return to top
The CSF is usually obtained through a lumbar puncture (spinal tap).How to prepare for the test Return to top
Preparation is the same as for a lumbar puncture. You must sign a consent form. You must be prepared to remain in the hospital for at least the 6 to 8 hours that you must remain lying down.How the test will feel Return to top
The position may be uncomfortable, but you MUST remain in the curled position to avoid moving the needle and possibly injuring the spinal cord.Why the test is performed Return to top
The culture helps identify fungus, virus, or bacteria that are present.Normal Values Return to top
No organism growth (negative) is normal.What abnormal results mean Return to top
If growth of fungus, virus, or bacteria occurs (a "positive culture"), this indicates meningitis or other infections. The culture will determine the type of organisms present in the CSF.What the risks are Return to top
Special considerations Return to top
Not applicable. Update Date: 1/26/2004 Updated by: Daniel Levy, M.D., Ph.D., Infectious Diseases, Greater Baltimore Medical Center, Baltimore, MD. Review provided by VeriMed Healthcare Network.
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Page last updated: 28 October 2004 |