Laboratory Test Detail

Last Updated: June 18, 2024 @ 9:13 am


Treponema pallidum (Syphilis) Screening Cascade

  • One SST

Also Acceptable:
  • One Red Top
  • 1 mL (Min:0.5 mL) Serum . Submit Refrigerated. Submit in a Standard Transport Tube.
Special Handling:
  • Separate from cells ASAP
  • If Treponemal Antibody Total is Reactive then the RPR (Test# 1033) will be performed. If the RPR is Reactive, then the RPR Quant (Test# 2005) will be performed. If the RPR is Non-Reactive then the Treponemal Ab, IgG (Test# 2628) will be performed. Additional charges will apply.
Rejection Criteria:
  • Bacterially Contaminated Samples
  • Grossly Hemolyzed Samples
  • Grossly Lipemic Samples
Stability:Ambient: Unacceptable; Refrigerated: 1 Week(s); Frozen: 1 Month(s); Incubated: Unacceptable
  • Chemiluminescent Immunoassay
Reported:1-3 Day(s)
CPT Codes:
  • 86780
Interpretive Data:General Reference Range : non-reactive
When the TREPONEMAL AB TOT test is reactive, it will reflex to RPR. If the RPR is non-reactive, it will then reflex to the TREPONEMAL AB IgG test for confirmation. When interpreting these results, consider the patient's history of prior infections and treatment and the patient's risk of re-infection. If diagnosis is still unclear, recommend re-testing in 2-4 weeks.
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