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Indirect Fluorescent Antibody (IFA), Treponema pallidum substrate
To confirm presence of Treponema pallidum antibodies in the diagnosis of syphilis.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect specimen in SST tube. Centrifuge; aliquot 1.5 mL of serum into 3 plastic vials (0.5 mL each), and refrigerate. Either Treponemal antibody FTA-ABS and RPR (FTA) or Treponemal antibody FTA-ABS only (FTA A) may be ordered. If FTA only is requested, results of non-syphilis serology (VDRL or RPR) must be indicated on requisition; 2 serum aliquots of 0.5 mL each are required for FTA only.