What is the FTA – ABS test? Why is the test done? Everything around this, that you should know, in this post, and of course our doctors are always there to help you. Just fill in your details in the form down below and we will answer all your questions for FREE!
What is an FTA – ABS test?
It stands for fluorescent treponemal antibody absorption test. FTA – ABS is a blood test to detect the antibodies against bacteria, treponema pallidum. This bacterium is responsible for causing syphilis.
What is syphilis?
Syphilis is a sexually transmitted disease (STD), caused by a bacterium, treponema pallidum. It spreads through direct contact with the syphilitic sores which are present on the penis, vagina, or rectum.
What is the clinical significance of this test?
FTA – ABS test is done to check for antibodies to T. pallidum. It becomes reactive after 6-7 weeks of infection. This test confirms the results of rapid plasma regain (RPR) and venereal disease research laboratory (VDRL).
It remains positive for life once infected so cannot help in diagnosing active syphilis.
When should I get it done?
Usually, it is done after some tests for syphilis like RPR and VDRL. You are recommended to get this test done if you have the following symptoms:
- Small, round sores on the genitals (chancres)
- Fever
- Hair loss
- Joint pains
- Swollen lymph nodes
What do the negative results indicate?
Negative or normal results mean you do not have current or any past infection from treponema pallidum.
What do the positive results indicate?
Positive results mean you have syphilis infection either presently or previously. It will remain reactive for a lifetime even if you’ve been treated for syphilis completely.
Can FTA – ABS help in monitoring the treatment?
As it remains reactive for a lifetime to T. pallidum even after the treatment, it cannot be used to monitor the treatment. Also, it cannot help with the diagnosis of syphilis.
