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Test Name:
Treponema pallidum IgG Antibody (FTA-ABS), Serum
- SBMF No:
28030 - Performance Lab Name:
Immunology - Test Mnemonic:
FTA - ABN:
Not required - CPT Code:
86780 - LOINC Code:
17726-1 - Also Known As:
FTA-ABS
Fluorescent Treponemal Antibody-Absorption, Serum - Also See:
28244 Treponema pallidum IgG Antibody, by MFI, with RPR Titer if Indicated - Spec Type:
Serum - Spec Container:
Gold top (SST) or red top (serum) tube - Pref Vol:
1.0 mL - Min Vol:
0.2 mL - Fasting:
No - Spec Collect:
Routine venipuncture - Spec Process:
Clot 30 minutes
Promptly centrifuge 15 minutes
Immediately transfer serum to separate plastic tube
Properly centrifuged gel barrier tube sample does not require transfer of serum to separate tube - Spec Store Transport:
Refrigerated - Spec Stability:
5 days refrigerated (2-8°C)
Greater than 5 days, freeze (-20°C) – Do not use frost-free units that undergo repeated freeze/thaw cycles - Spec Reject:
Hemolyzed or lipemic sample - Methodology:
Indirect Fluorescent Antibody (IFA) - Use:
Confirmation of syphilis screening tests - Clinical Significance:
Fluorescent Treponemal Antibody-absorbed (FTA-ABS) is a confirmatory test procedure for syphilis screening procedures. Although the FTA-ABS procedure is more specific, the relatively low incidence of false positive FTA-ABS reactions emphasizes the need to interpret serological results in the light of the patients complete history and clinical picture. The FTA-ABS procedure is the method most recommended for confirming positive reagin tests. When the FTA-ABS test was compared to other procedures, the FTA-ABS test was shown to provide greater sensitivity and clinical correlation, particularly in untreated cases of syphilis. - Reference Range:
Non-reactive - Day Run:
Wed, Sat - Time Run:
8:00 am - Time Reported:
5:00 pm - Test Type:
INFECTIOUS ANTIBODY
