ARUP's Laboratory Test Directory

Treponema pallidum Antibody, IgG by Immunoblot : 2003095
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Additional Technical Information
  


Mnemonic: SYPH G IB

Ordering Recommendation: Recommended supplementary confirmatory test for syphilis in so-called reverse screening algorithm. Use when a reactive EIA screening test is not confirmed by the TP-PA test or a reactive TP-PA screening test is not confirmed by the EIA test.
Methodology: Qualitative Immunoblot
Performed: Tue
Reported: 1-8 days
Specimen Required: Collect: Serum separator tube.

Specimen Preparation: Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.15 mL)

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Other body fluids.

Stability (collection to initiation of testing): After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Reference Interval:
Negative - No specific IgG antibodies against T. pallidum detected.
Equivocal - Questionable presence of T. pallidum IgG antibodies detected. Repeat testing in 2-4 weeks is recommended.
Positive - IgG antibodies against T. pallidum are detected.
Interpretive Data:

See Compliance Statement D: www.aruplab.com/CS
CPT Code(s): 86780
Cross References: Syphilis Immunoblot (Treponema pallidum Antibody, IgG by Immunoblot) , Syphilis Western Blot (Treponema pallidum Antibody, IgG by Immunoblot)