Doctor's Assessment Included
Every result includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.
Syphilis Screening
The Syphilis Screening test is a treponemal-based test that detects antibodies specifically directed against Treponema pallidum, the bacterium that causes syphilis. Once positive, this test typically remains positive for life, regardless of treatment.
What It Measures
This test detects treponemal antibodies that the immune system produces in direct response to Treponema pallidum. Unlike non-treponemal tests such as the RPR, treponemal antibodies are highly specific to syphilis and rarely produce false positive results.
A key characteristic of treponemal tests is that they typically remain positive for life once seroconversion has occurred, even after successful treatment. This means the test indicates whether a person has ever had syphilis, but it cannot distinguish between current and past infection on its own.
Why It Matters
Detecting syphilis is essential because the infection can progress through increasingly severe stages if left untreated, ultimately affecting the cardiovascular and nervous systems. Early-stage syphilis is readily treatable with antibiotics.
The treponemal screening test is often used as an initial diagnostic step. When positive, it is typically paired with a non-treponemal test such as the RPR to assess disease activity and guide treatment decisions.
When to Test
Screening is recommended for sexually active individuals at risk, including those with new or multiple partners, men who have sex with men, and individuals living with HIV. Routine screening is also standard during pregnancy to prevent congenital syphilis.
Testing is also appropriate when symptoms suggestive of syphilis appear, such as painless genital sores, body rash, or unexplained neurological symptoms. If you have been treated for syphilis in the past, discuss with your healthcare provider which test is most appropriate for follow-up.
Recommendations
Male
Non-reactive result indicates no syphilis infection detected. Continue safe sexual practices.
Reactive result requires confirmatory testing and appropriate antibiotic treatment. Consult your healthcare provider or STI clinic.
Female
Non-reactive result indicates no syphilis infection detected. Continue safe sexual practices.
Reactive result requires confirmatory testing and appropriate antibiotic treatment. Consult your healthcare provider or STI clinic.
Lifestyle Tips
Consistent condom use and limiting the number of sexual partners help reduce syphilis risk. Regular STI screening is a key component of responsible sexual health, particularly for those at higher risk.
If you receive a positive result, work closely with your healthcare provider on treatment and follow-up. Inform recent sexual partners so they can be tested. Remember that syphilis is curable with appropriate treatment, and seeking testing is a positive and responsible step.