Understanding Syphilis Screening
Syphilis is a sexually transmitted infection (STI) that can often be treated successfully when detected early. However, because many people may have no symptoms during the early stages, screening plays an important role in protecting both individual and public health.
In my practice, I recommend syphilis screening for individuals based on their risk factors, clinical symptoms, pregnancy screening, or as part of a comprehensive sexual health assessment.
What Is an RPR Test?
The Rapid Plasma Reagin (RPR) test is a blood test commonly used to screen for syphilis. Rather than detecting the bacteria directly, it measures antibodies produced by the body in response to infection.
If the RPR result is reactive, the laboratory will usually perform:
- RPR titre (to estimate disease activity and monitor treatment response)
- TPPA (Treponema pallidum Particle Agglutination assay) to confirm the diagnosis
Why Are Both Tests Needed?
The RPR is an effective screening test but can occasionally produce false-positive results. A TPPA test helps confirm whether antibodies specific to the syphilis bacteria are present.
Using both tests together improves diagnostic accuracy and helps your doctor determine the appropriate next steps.
Who Should Consider Syphilis Screening?
Your doctor may recommend testing if you:
- Are sexually active with new or multiple partners
- Have had unprotected sexual contact
- Have symptoms suggestive of a sexually transmitted infection
- Have a partner diagnosed with syphilis
- Are pregnant
- Are undergoing routine sexual health screening
What Are the Symptoms of Syphilis?
Symptoms vary depending on the stage of infection and may include:
- A painless sore (chancre)
- Skin rash
- Swollen lymph nodes
- Fever
- Fatigue
- Mouth or genital sores
Some individuals may not experience any noticeable symptoms, making regular screening important for those at risk.
What Does a Reactive RPR Mean?
A reactive RPR does not automatically confirm syphilis. Additional confirmatory testing with TPPA is required to establish the diagnosis. Your doctor will also consider your medical history, symptoms and other clinical findings.
Is Syphilis Treatable?
Yes. Syphilis is treatable, particularly when diagnosed early. Prompt treatment helps prevent serious long-term complications and reduces the risk of transmitting the infection to others.
When Should You See a Doctor?
Arrange a medical review if you:
- Have symptoms of an STI
- Have had unprotected sexual contact
- Have been informed that a sexual partner has an STI
- Are planning a pregnancy or are pregnant
- Would like routine sexual health screening
Early diagnosis and treatment are key to protecting your health.
Doctor's Insight
In my practice, I encourage patients to view sexual health screening as a normal part of preventive healthcare. Many sexually transmitted infections, including syphilis, can occur without obvious symptoms. Regular screening allows early diagnosis, timely treatment and helps protect both your health and that of your partner.
– Dr. Teh Boon Teong
Consultant in Internal Medicine
Evercare Medical Care Centre, Penang, Malaysia.
Frequently Asked Questions
It is a blood test used to screen for syphilis by detecting antibodies produced in response to infection.
TPPA is a confirmatory blood test that detects antibodies specific to the bacteria that causes syphilis.
A reactive RPR requires further evaluation with confirmatory testing, such as TPPA, before a diagnosis is made.
Yes. Early diagnosis and appropriate treatment are highly effective.
If you have risk factors or your doctor recommends screening, testing is worthwhile because syphilis can be present without noticeable symptoms.