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What is a VDRL, CSF?

VDRL, CSF (Venereal Disease Research Laboratory test of cerebrospinal fluid) is a laboratory test used to detect antibodies associated with Treponema pallidum, the bacterium that causes syphilis, in cerebrospinal fluid. It is primarily performed when neurosyphilis is suspected, particularly in patients with neurological or ocular symptoms and evidence of syphilis infection. The test helps support diagnosis and guide appropriate evaluation and treatment.

Additional Information

Also known as/ Other names: CSF VDRL Test, Cerebrospinal Fluid VDRL, CSF Syphilis Test, CSF Non-Treponemal Test, CSF Venereal Disease Research Laboratory Test
Parameters: 1
Recommended for: M/F/Others
Sample Type: CSF
Patient Preparation: No prior preparation is needed
Reports: Same Day

FAQs

What is neurosyphilis?

Neurosyphilis occurs when Treponema pallidum affects the central nervous system. It can develop at different stages of syphilis and may cause neurological or psychiatric symptoms.

Is VDRL, CSF the same as a blood VDRL test?

No. A blood VDRL tests serum for antibodies, while VDRL, CSF is performed on cerebrospinal fluid to evaluate for possible central nervous system involvement.

What does a positive VDRL, CSF result mean?

A reactive CSF-VDRL is highly specific for neurosyphilis when the specimen is uncontaminated by blood, and the clinical context is appropriate. Further clinical evaluation is still necessary.

Does a negative VDRL, CSF rule out neurosyphilis?

No. CSF-VDRL has high specificity but limited sensitivity. A negative result does not completely exclude neurosyphilis, particularly when symptoms or other CSF findings remain suggestive.

What other tests may be performed for neurosyphilis?

Evaluation may include serum treponemal tests, CSF cell count, protein measurement, and sometimes CSF treponemal antibody testing, depending on the clinical situation.

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