Treponema pallidum Antibody, Particle Agglutination

Test Code

TRPAB

Alias/See Also

LAB13239

CPT Codes
<p>86780</p>

Preferred Specimen

Specimen Type: Serum

Collection Container/Type

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Minimum Volume

0.5 mL

Transport Temperature

Room temperature

Specimen Stability

Room temperature:7 days

Refrigerated: 7 days

Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Hemolysis • Lipemia • Plasma • CSF

Methodology

Particle Agglutination

Setup Schedule

Set up: Mon, Wed-Sat; Report available: 1-3 days

Report Available

Next day

Reference Range

Non-Reactive

Clinical Significance

The TP-PA test is a confirmatory treponemal test used to aid in the diagnosis of syphilis in the context of a positive non-treponemal (lipoidal antigen) assay. It is not intended to be used as a standalone test for diagnosis. For algorithm based syphilis testing, please see test code 90349 Syphilis Antibody Cascading Reflex (reverse) or test code 36126 RPR (Diagnosis) with Reflex to Titer and Confirmatory Testing (traditional).

Performing Laboratory
Quest Diagnostics Nichols Institute 14225 Newbrook Drive Chantilly, VA 20153

Last Updated: February 17, 2023

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.