The FTA-ABS test is often performed after other tests that screen for syphilis, such as the rapid plasma regain (RPR) and venereal disease research laboratory (VDRL) tests. It’s usually done if these initial screening tests come back positive for syphilis. The FTA-ABS test can help confirm whether the results of these tests are accurate.
Your doctor may also order this test if you have symptoms of syphilis, such as:
- small, roundish sores on the genitals, which are called chancres
- a fever
- hair loss
- aching joints
- swollen lymph nodes
- an itchy rash on the hands and feet
The FTA-ABS test might also be done if you’re being treated for another STI or if you’re pregnant. Syphilis can be life-threatening for a growing fetus if it’s left untreated.