Syphilis Antibody Cascading Reflex

Test Code
90349

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).

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

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



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.