Test Directory

Test Code
TPPA
Test Name
T. pallidum by TP-PA
CPT Codes
86780
Expected Turnaround Time
1 - 4 days
Clinical Utility

CDC-recommended confirmatory test for syphilis. Order if initial screening (eg, RPR, VDRL) is reactive.

Specimen and Container Info

Preferred Specimen Type: Serum

  

Preferred Collection Container: Gold Top. Serum Separator

Desired Specimen Volume: 1 mL

Collection Instructions

Collect specimen in gold top, serum separator tube via venipuncture. Centrifuge and transfer serum to aliquot tube.

Transport Instructions

Transport to the laboratory refrigerated. 

Stability Requirements

Room Temperature

48 hours

Refrigerated

2 weeks

Frozen

1 year
Causes for Rejection
CSF or other body fluids.
Methodology
Qualitative Particle Agglutination
Reference Intervals

 Nonreactive

Reference Lab
ARUP Laboratories
Testing Schedule
Routine, 5 times per week