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| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Listeria Antibody, CF, CSF
Test Code11012
CPT Codes
86609
Preferred Specimen
1 mL CSF collected in a sterile plastic leak-proof container
Minimum Volume
0.5 mL
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly icteric
Methodology
Complement Fixation (CF)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Tues-Sat; Report available: 2-5 days
Reference Range
<1:1 titer
Interpretive Criteria
The recommended laboratory method for diagnosis Listeria infection of the central nervous system is CSF culture. The intended use of this complement fixation assay for Listeria antibodies is to document infection when culture is not performed, or when antibiotic treatment precludes obtaining an accurate culture result. Diagnosis of infections of the central nervous system can be accomplished by demonstrating the presence of intrathecally-produced specific antibody. Interpretation of results may be complicated by low antibody levels found in CSF, passive transfer of antibody from blood, and contamination via bloody taps.
Interpretive Criteria
| <1:1 | Antibody Not Detected |
| ≥1:1 | Antibody Detected |
Clinical Significance
A positive result suggests central nervous system infection.
However, results should be interpreted with caution.
However, results should be interpreted with caution.
