Days Set Up
Tuesday, Friday
Analytic Time

8 hours

Soft Order Code
FTA/FTAA

Test Updated:

Synonyms

Fluorescent Treponemal Antibody - Absorption
FTA
FTA-A
FTA-ABS
Syphilis Antibody
Treponema pallidum Antibody
Fluorescent Treponemal Antibody - Absorption
FTA
FTA-A
FTA-ABS
Syphilis Antibody
Treponema pallidum Antibody
FLUORESCENT TREPONEMAL AB-ABS
FLUORESCENT TREPONEMAL AB-ABS
INTENSITY
RPR
INTENSITY
ABSORPTION
RAPID PLASMA REAGIN
ABSORPTION
FLUORESCENT TREPONEMAL AB&RPR
FLUORESCENT TREPONEMAL AB ABS

Looking to order a test?

We’ve provided helpful links to make ordering easy.

Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

Indirect Fluorescent Antibody (IFA), Treponema pallidum substrate

Test Usage

To confirm presence of Treponema pallidum antibodies in the diagnosis of syphilis.

Reference Range

Nonreactive

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

Specimen Requirements

Collection Onsite

Collect specimen in SST tube.

Collection Offsite

Collect specimen in SST tube. Centrifuge; aliquot 1.5 mL of serum into 3 plastic vials (0.5 mL each), and refrigerate up to 48 hours. Either Treponemal antibody FTA-ABS and RPR (FTA) or Treponemal antibody FTA-ABS only (FTAA) 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.

Yellow Top Tube
Normal Volume
1.5 mL serum
Minimum Volume
1.0 mL serum

Billing Information

CPT Code
86780 FTA, 86592 RPR
Pro Fee Code
 
LOINC
5393-4 (FTA), 20507-0 (RPR), 31147-2 (RPRQN)

Have More Questions?

Explore our helpful billing resources:

Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.