Clinical Significance
RPR (Diagnosis) with Reflex to Titer and Confirmatory Testing (REFL) - This is a non-treponemal screening test for syphilis. False positive results may occur due to systemic lupus erythematosus, leprosy, brucellosis, atypical pneumonia, typhus, yaws, pinta, or pregnancy. Monitoring of RPR is helpful in assessing effectiveness of therapy.
Preferred Specimen(s)
1 mL serum
Minimum Volume
0.6 mL
Transport Container
Transport tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 4 days
Refrigerated: 7 days
Frozen: 30 days
Reject Criteria
Gross hemolysis • Grossly lipemic
Includes
This is a client specific reflex test. Reflex criteria has been pre-defined by the ordering physician. Additional testing will be performed at an additional charge.
.
If RPR Screen is reactive, RPR Titer and Fluorescent Treponemal Antibody (FTA) confirmation will be performed at an additional charge (CPT code(s): 86593, 86780).
Methodology
Flocculation
Reference Range(s)
Non-Reactive