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HelpTest Code VDSFT VDRL Titer, Spinal Fluid
Specimen Required
Only orderable as a reflex. For more information see NSAIP / Neurosyphilis IgG Antibody Index with VDRL, Serum and Spinal Fluid.
Specimen Type: Spinal fluid
Container/Tube: Sterile vial
Specimen Volume: 2.2 mL
Collection Instructions:
1. The spinal fluid (CSF) specimen must be collected within 24 hours of the serum specimen, preferably at the same time.
2. The CSF aliquot should be from the second, third, or fourth CSF vial collected during the lumbar puncture. Do not submit CSF from the first vial due to the possibility of blood contamination, which will cause specimen rejection.
3. Label vial as spinal fluid or CSF.
4. Band CSF specimen together with the serum sample.
Secondary ID
621912Useful For
Aid in the diagnosis of neuroinvasive syphilis as part of a profile
Method Name
Only orderable as a reflex. For more information see NSAIP / Neurosyphilis IgG Antibody Index with VDRL, Serum and Spinal Fluid.
Flocculation/Agglutination
Specimen Type
CSFSpecimen Minimum Volume
1.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| CSF | Refrigerated (preferred) | 14 days |
| Frozen | 14 days |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Spinal fluid (CSF) contaminated with blood | Reject |
Reference Values
Only orderable as a reflex. For more information see NSAIP / Neurosyphilis IgG Antibody Index with VDRL, Serum and Spinal Fluid.
Negative
Reference values apply to all ages.
Interpretation
Negative:
No non-treponemal (lipoidal) antibodies to syphilis (T. pallidum) detected. Discordant results between the neurosyphilis antibody index and the VDRL result may be due to increased sensitivity of the antibody index assay.
Positive:
Results are consistent with neurosyphilis.
Day(s) Performed
Monday through Friday
Report Available
2 to 4 daysSpecimen Retention Time
14 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
86593
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| VDSFT | VDRL Titer,CSF | 31146-4 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 621959 | VDRL Titer,CSF | 31146-4 |