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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 # |
Syphilis Antibody Cascading Reflex (Reverse Algorithm)
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 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
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Daily; Report available: 1-4 days
Reference Range
See Laboratory Report
Clinical Significance
This test is used to aid in the diagnosis of syphilis using the reverse algorithm. The algorithm starts with the Treponema pallidum Antibody immunoassay, a treponemal serologic test. If positive, samples will be further tested using RPR, a nontreponemal (lipoidal antigen) serologic test, and if reactive will reflex to titer. T. Pallidum positive samples that do not confirm with RPR will be tested by a second treponemal test, Treponema Pallidum Particle Aggluctination (TP-PA).
