Confidential syphilis blood testing across London, with GP advice on symptoms, exposure timing and follow-up.
Book a GP appointment if you have symptoms, a recent exposure, a previous reactive result or need help choosing the right STI test.

Test Options
Browse common STI screens that can include syphilis testing. To book, book a GP appointment and your GP will arrange the most appropriate blood test during your visit.
Chlamydia by PCR
Gonorrhea by PCR
HIV 1&2/p24 antigen
Syphilis antibody
Chlamydia by PCR
Gonorrhea by PCR
HIV 1&2/p24 antigen
Syphilis antibody
Hepatitis B surface antigen
Hepatitis C antibody
Chlamydia by PCR
Gonorrhea by PCR
HIV 1&2/p24 antigen
Syphilis antibody
Hepatitis B surface antigen
Hepatitis C antibody
Trichomonas by PCR
From Booking to Results
Book with a GP, check the timing, have the right blood sample taken and receive your result securely.

Testing Options
Syphilis testing usually uses a blood sample to look for markers of infection.
A private syphilis test in London checks for laboratory markers linked to syphilis infection. Syphilis is caused by a bacterium and can progress through different stages, so results need clinical interpretation.
At DocTap, syphilis testing is GP-led. Your GP can advise whether a focused syphilis test, repeat testing or broader private STI testing is most appropriate.
Syphilis blood tests can be more complex than a simple positive or negative screen. A report may include different markers, and previous infection or treatment can affect how the result is interpreted.
Your GP can review your symptoms, exposure timing and any previous syphilis history before advising on next steps.
Syphilis is often included in broader sexual health screens, but not every screen includes the same infections or laboratory markers.
You can compare STI test packages and prices before booking, or book with a GP if you need help choosing the right screen.
If the concern follows a sexual exposure, your GP may discuss other STI tests alongside syphilis. This can include gonorrhoea testing, trichomonas testing, herpes testing, hepatitis B testing or hepatitis C testing depending on what happened.
Symptoms and Timing
Syphilis can cause visible symptoms, but it may also be present with no symptoms.
Syphilis is a sexually transmitted bacterial infection. It can be passed on through vaginal, anal or oral sex, and through direct contact with infectious sores.
Because symptoms can be mild, hidden or mistaken for something else, testing may be recommended even when you feel well after a relevant exposure.
Symptoms can include a painless sore, rash, swollen glands, fever, tiredness or patchy hair loss. Some symptoms can settle without the infection being cleared.
Do not rely on symptoms alone. If you are worried about syphilis, book a GP appointment for testing advice and follow-up.
Syphilis is usually transmitted through close sexual contact with infectious sores or rashes. These can appear in places that are not always easy to see.
If a partner has tested positive, or if you have had a higher-risk exposure, your GP can advise on timing and whether repeat testing may be needed.
Yes. Syphilis is an STI and may be considered as part of a wider sexual health screen, especially after condomless sex, a new partner or a partner notification.
For broader advice, see private STI testing in London.
Syphilis tests can be affected by timing. A very recent exposure may need repeat testing even if an initial result is negative.
Your GP can advise based on the exposure date, symptoms and any previous syphilis results. If you have symptoms or a previous reactive result, book with a GP rather than trying to choose a test in isolation.
Results and Next Steps
A syphilis result needs to be interpreted in context, especially if there has been previous infection or treatment.
A negative syphilis result means the laboratory markers tested were not detected. This can be reassuring, but may not fully exclude very recent infection.
If the exposure was recent or symptoms continue, your GP may advise repeat testing or referral to a sexual health service.
A reactive syphilis result needs clinical follow-up. Some results can reflect current infection, previous infection or previous treatment, so the details matter.
Your GP can explain the report and advise on next steps, including specialist referral where needed.
If you have had syphilis before, blood markers may remain detectable after treatment. This can make interpretation more nuanced than a first-time screen.
Bring any previous results or treatment details to your appointment if you have them, so your GP can interpret the new result in context.
Syphilis is treatable, but treatment and follow-up should be guided by a clinician. Recent partners may also need testing and treatment advice.
If your result is reactive, or if there are symptoms suggesting later-stage infection, your GP may advise referral to a specialist sexual health service.
Tell your GP if you are pregnant, planning pregnancy, have neurological symptoms, visual symptoms, or a partner has recently tested positive.
These details can change how quickly follow-up is needed and whether specialist sexual health input is required.
Clinical Quality
The clinical standards behind every DocTap sexual health test, across our London clinics.
Test Further
No. Check the individual STI package before booking. Your GP can advise whether syphilis and other STI tests should be included.
Syphilis testing usually uses a blood sample. Your GP can advise if other tests or follow-up are needed based on symptoms and exposure.
Yes. Syphilis can be present without symptoms, so testing may be appropriate after a relevant sexual exposure.
Yes. Testing very soon after exposure may miss infection. Repeat testing may be recommended depending on timing and risk.
A reactive result needs clinical follow-up. Your GP can explain the report and advise whether specialist sexual health referral is needed.
Book a GP appointment for testing, or compare STI test options and prices.
Blood tests at DocTap

Situated by South Quay Footbridge, a 3-minute walk from Canary Wharf and Heron Quays stations.

Situated on King Street, a 6-minute walk from Hammersmith underground stations.

Located just off Euston Road, less than a 10-minute walk from both Euston and King’s Cross stations.

Located in the heart of the City, a 5-minute walk from Liverpool Street and Bank stations.

Located just off Borough High Street, an 8-minute walk from London Bridge station.

Located on Wigmore Street, just off Harley Street, a 7-minute walk from Bond Street station.

Located on Clapham High Street, only a 3-minute walk from Clapham Common station.

Located off Old Street, a 3-minute walk from Old Street underground station.

Located within The Conductor building, a 6-minute walk from Stratford station, or 3 minutes from the Westfield shopping centre.

Only a 3-minute walk from Swiss Cottage station.

Situated on Lower Belgrave Street, a 5-minute walk from Victoria rail and underground stations.

Speak to a GP by video or phone, wherever you are — no app needed. Ideal for follow-ups and straightforward concerns.