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Syphilis Antibody Cascading Reflex
Test Code90349
CPT Codes
86780
Includes
If T. pallidum Antibody is equivocal or positive, then RPR Screen with Reflex to Titer will be performed at an additional charge (CPT code(s): 86592).
If RPR Screen is reactive, then RPR titer will be performed at an additional charge (CPT code(s): 86593).
If RPR screen is non-reactive, then T. pallidum Antibody, Particle Agglutination will be performed at an additional charge (CPT code(s): 86780).
If RPR Screen is reactive, then RPR titer will be performed at an additional charge (CPT code(s): 86593).
If RPR screen is non-reactive, then T. pallidum Antibody, Particle Agglutination will be performed at an additional charge (CPT code(s): 86780).
Preferred Specimen
3 mL serum
Minimum Volume
1.4 mL
Transport Container
Plastic screw-cap vial
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 4 days
Refrigerated: 7 days
Frozen: 30 days
Refrigerated: 7 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Lipemia • Body fluids other than serum
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Daily; Report available: 1-4 days
Reference Range
See Laboratory Report
Clinical Significance
Identification of Treponema pallidum antibodies may aid in the diagnosis of syphilis.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153
