Update Type: New Tests
Test Updated: 11/27/2024
Test Overview
Test Methodology

Multiplex bead Immunoassay

Test Usage

Syphilis reverse algorithm is used to screen patients for syphilis. Positive or equivocal result will reflex to RPR and TPPA, if indicated to help differentiate between active infection, past infection, no infection or false positive total antibody. All results must be reviewed before making a clinical decision.

Reference Range *

Nonreactive

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

A nonreactive result does not exclude the possibility of exposure to or infection with T. pallidum. Antibodies may be at low or undetectable levels in incubating or early primary disease and in some clinical conditions.
Detection of treponemal antibodies may indicate recent, past or successfully treated syphilis infections and therefore cannot be used to differentiate between active and cured cases.
A patient with a Syphilis Total reactive result will usually remain reactive for life, and therefore, antibody indices cannot be used to determine responses to therapy. In these cases, an RPR should be used to monitor the patient.

Test Details
Days Set Up
M-F
Analytic Time

24 hours

Soft Order Code
SYPH
MiChart Code
Syphilis Screening, Reverse Algorithm
Synonyms
    Laboratory
    Chemical Pathology
    Section
    Immunopathology
    Specimen Requirements
    Collection Instructions

    Collect SST and send refrigerated to main hospital specimen processing

    Alternate Specimen
    red top, EDTA or heparin
    Contraindications
    Contaminated, icteric, lipemic, hemolyzed or heat inactivated sera my cause erroneous results and should be avoided.
    Normal Volume
    1.0 ml
    Minimum Volume
    0.5 ml
    Storage Temperature
    Room temperature (25C) up to 3 days; refrigerated (2-8C) up to 7 days. Longer storage, keep at -20C or colder
    Rejection Criteria
    Avoid contaminated, icteric, lipemic, hemolyzed or heat inactivated sera.
    Additional Information

    All reactive and equivocal results will reflex to an RPR and TPPA, if indicated. By ordering this test the clinician acknowledges that additional reflex testing will be performed and billed at a separate additional charge if indicated.

    Billing
    CPT Code
    86780
    Fee Code
    KA057
    Reflex CPT
    RPR 86592, RPRQN 86593, TPPA 86780
    Reflex Fee Code
    RPR 21922, RPRQN 21923, TPPA KA050
    LOINC
    47236-5
    NY State Approved
    No